WRITTEN EXERCISE

1. Milk weighing 1.032 times as much as water, how many kilos does 7 1. weigh?

2. Alcohol being 0.83 as heavy as water, find the weight of 7 1. Express the result in kilos; in pounds.

3. The Eiffel Tower in Paris is 300 m. high. Express this as inches; as feet; as a fraction of 1 km.

4. Gold being 19.3 times as heavy as water, how much does 17.5 cm3. weigh? Answer in grams; in grains.

5. Cork being one fourth as heavy as water, how much does 9 dm3. of cork weigh? Answer in kilos; in pounds.

6. The specific gravity of silver (see page 184, Ex. 16) being 10.5, what is the weight of a piece of silver 12.5 cm. by 7.2 cm. by 3.1 cm.?

7. The specific gravity of petroleum being 0.7, what is the weight of 7.34 dm3. of petroleum?

8. The specific gravity of alcohol being 0.79, what is the weight of alcohol in a tank 5 dm. by 3 dm. by 2.5 dm.?

9. The specific gravity of copper being 8.9, what is the weight of a piece of copper 1 m. by 2 dm. by 9 cm.?

10. One piece of land is 20 m. long and 30 m. wide, and another is 20 yd. long and 30 yd. wide. Find the area of the first in hektares and the second in acres.

11. Samples of merchandise may be sent abroad by mail if they do not weigh more than 350 g. Express this as a fraction of a pound; as ounces; as a fraction of 1 kg.

12. Find in kilos the weight of water in a tank 3 m. by 2 m. by 5 m.; also the weight in pounds of water in a tank 3 ft. by 2 ft. by 5 ft. (1 cu. ft. of water weighs 62.5 lb. Notice the simplicity of the metric system.)

MR. FIELD'S TRIP TO EUROPE

Mr. and Mrs. Field took a vacation trip to Europe, landing at Liverpool, traveling through England, France, Germany, Switzerland, and Italy, and sailing home from Naples. After leaving England they found

called the franc a lira (lē-rä; plural, lire, lē-rā). In making estimates in our own system they allowed $5 to £1, 254 to 1s., 24 to 1d., 25¢ to 1 M., 20g to the franc or lira, 1 yd. or 3 ft. to 1 m., mi. (0.6 mi.) to 1 km., and 23 lb. (2.2 lb.) to 1 kg.

ORAL EXERCISE

1. At $90 a steamer ticket each way, less 10% on the return portion of the ticket, what did both tickets cost?

2. On the voyage to Liverpool he gave £3 5s. for stewards' fees. How many dollars did he give?

3. He landed in Liverpool at 2 P.M., and at once telegraphed his brother in San Francisco and his sister in New York. Allowing an hour for delay, at what time did the messages reach their respective destinations?

4. He paid 21s. 9d. a ticket from Liverpool to London. How much did he pay for the two tickets? How many dollars?

5. He paid the cab driver in London 2s. 6d. to take them to their hotel. How much is this in our money?

6. He paid 12s. a day for each, at one of the smaller hotels. They remained there a week. How much did it cost the two? How much in our money?

7. He paid 33s. each for two tickets to Paris. How much did he pay for both? How much in our money?

8. At Paris he paid the cab driver 2 fr. 50 c. to take them to their hotel. How much is this in our money?

9. He paid 14 fr. a day for each, at a hotel near the Arch of Triumph, and they spent 11 days in Paris. How much was the hotel bill? How much in our money?

10. The Arch of Triumph is 50 m. high. How many feet high? It is at the end of a beautiful avenue 2.2 km. long. Express this distance in miles.

11. Not far from his hotel is the Eiffel Tower, 300 m. high. Express this height in feet.

12. The distance from Paris to Cologne is 510 km. Express this distance in miles.

13. He bought two tickets at 44 fr. each. How much did they cost? How much in our money ?

14. They reached Cologne at 5:30 P.M. (Mid-European time, 15° E.). What time (standard) was it then in England? in Boston? in Chicago? in Portland, Oregon?

15. They spent two days in Cologne, paying 12 M. each per day. How much was the hotel bill? How much in our money?

16. At Cologne Mrs. Field did some shopping, spending 150 M. How much is this in our money?

17. Among her purchases was some silk for a gown. She bought 18 m. How many yards?

18. From Cologne they went up the Rhine to Mainz, a distance of 150 km. How many miles?

19. The tickets from Cologne to Mainz were 15 M. 50 pf. each. What did the two cost? How many dollars? 20. They spent two days at Mainz, paying 14 M. each per day. How much was the hotel bill? How many dollars? 21. They then went to Lucerne, a distance of 400 km. How many miles?

22. The tickets to Lucerne cost 32 M. apiece. How much did the two cost? How many dollars?

23. They spent two weeks in Switzerland, their expenses averaging 22 fr. 50c. apiece per day. How much were they for two? How many dollars? How many dollars for the two weeks?

24. Their tickets from Lucerne right through to Naples, including Florence and Rome, cost 100 fr. apiece. How much for the two tickets? How many dollars?

25. They spent three weeks in Italy, their expenses averaging 20 fr. apiece per day. How much were they for two? How many dollars?

26. Their other purchases and extras in England amounted to £8, in France to 125 fr., in Germany to 120 M., in Switzerland to 60 fr., and in Italy to 80 lire. Express each in dollars.

WRITTEN EXERCISE

Taking the expenses as stated in the Oral Exercise, find the cost of the trip taken by Mr. and Mrs. Field.

TAXES

183. What are taxes? Whatever a man's occupation, one of his expenses will be taxes, money paid for the support of the village, town, city, county, or state.

184. Expenses of our government. The expenses of the United States government vary from year to year, but they average about $1,300,000 a day, or $473,500,000 a year. Some items of our income and expenditures are as follows, varying from year to year:

1. When our income is $575,000,000 and our customs receipts are $242,000,000, these receipts are what per cent of the income?

2. Taking our expenditures as $488,000,000 a year, what per cent of this goes to the War Department, as above stated? to the Navy Department? to pensions?

3. The colleges and universities of the country cost $23,850,000 a year, and are not supported by the government. This is what per cent of the $488,000,000 in Ex. 2?