61. George and Lewis start from the same place at the same time, and travel in the same direction, George at the rate of 714 rods an hour, and Lewis at the rate of 579 rods an hour; how far apart are they at the end of 9 hours? How far apart in 7 hours, if they had traveled in opposite directions?

62. If I receive $40 a month and spend $32 a month, in how many years will I save $1,152 ?

63. Subtract the difference between 79 and 2300 from their sum.

64. What is the sum of ten thousand ninety, seven thousand nine hundred, eight million nine hundred eighteen, five hundred thousand, seventy thousand seventyfive, and eight hundred.

65. The dividend is 736592, the divisor is 6978; what is the quotient and remainder? 66. The remainder is 658 and the subtrahend 1734; what is the minuend?

Pupils make and solve the following examples:

67. Given a multiplicand of 4 figures, a multiplier of 3 figures, required the product? 68. Given the minuend and remainder, find the subtrahend.

69. Given the subtrahend and the remainder, find the minuend.

70. Given the sum of three numbers and two of them, find the third.

71. Given the difference between two numbers and the less number, find the greater.

72. Given the divisor, quotient and remainder, find the dividend.

73. Given the product of two numbers and one of them, find the other.

74. Given the difference between two numbers and the greater number, find the less number.

75. Given whole price, number of articles, find the price of a different number of articles.

76. Given the cost and selling price, find the gain.

77. Given the selling price and the loss, find the cost.

78. Given the cost and the gain, find selling price.

79. Given the selling price and gain, find

cost.

80. Given the cost and the loss, find the