11. Selling price $300; loss $100. Loss %? 13. Selling price $175; cost $150. Gain %? 20. Cost $37.50; selling price $42. 22. Cost $24; gain 1%. Cost? Gain %? Gain %? Loss? Selling price? 23. Selling price $41.16; gain 5%. Cost? 24. Selling price $29.83; loss 5%. Loss? 25. Cost $19.50; loss 6%. Selling price? 26. Cost $84; selling price $184. Gain %? 27. Selling price $700; gain 250%. Cost? 28. Cost $324.80; gain 175%. Selling price? 29. Selling price $6.50; loss 131%. Loss? 30. Cost $346.50; selling price $339.57. Loss %? 31. Selling price $17.64; loss 2%. Cost? 32. Cost $4,613; gain 134%. Profit? 33. Selling price $26.69; gain 61%. Profit? 34. Cost $8,766; loss 3%. Loss? 35. Selling price $50.00; profit $4.20. Gain %? 36. Cost $37.50; gain $5.40. Gain %? 37. Selling price $205.20; loss $45.90. Loss %? 38. Cost $25.60; gain 61%. Selling price? 39. Selling price $17.35; loss %. Loss? 40. Profit $36; gain 4%. Cost? 41. Loss $28.17; loss 313%. Selling price? 100 42. Cost $3,864.25; loss 8%. Loss? 43. Selling price $89.37; profit $6.62. Gain %? 44. Cost $8; loss $. Loss %? 45. Selling price $22.35; gain 6%. Cost? 46. Profit $47.25; gain 71%. Selling price? 47. Loss $38.46; loss 1%. Cost? 48. Cost $75.52; gain 31%. Profit? 49. Selling price $49.95; loss $4.05. Loss %? 50. Cost $3,879; loss %. Loss? INTEREST. 873. In calculating interest, take 30 days to a month, 12 1. $750, for 21 years, at 6%. 2. $84.75, 3 months, at 4%. 3. $308.25, from Oct. 1 to Oct. 21, at 5%. 4. $464.75, 8 mo. 12 da., at 6%. 5. $360, 33 da., at 5%. 6. $94.43, 2 mo. 3 da., at 7%. 7. $400, 1 yr. 1 mo. 1 da., at 41%. 8. $720, 21 da., 7%. 9. $1,000, 8 da., 5%. 10. $630, from April 1, 1890, to Jan. 16, 1892, at 6%. 16. $813, from April 19, 1889, to March 4, 1894, at 6%. 17. $960, from Jan 1, 1893, to Dec. 21, 1894, at 4%. 18. $27.84, for 3 yr. 6 mo. 9 da., at 6%. 19. $48.90, for 17 da., at 6%. 20. $144, for 2 yr. 5 da., at 33%. 21. $834.76, for 15 mo. 27 da., at 41% 22. $5,760, for 1 yr. 5 mo. 29 da., at 5%. 23. $2,346.50, for 7 yr. 13 da., at 3%. 24. $1,892, for 3 yr. 5 mo., at 7%. 25. $150.40, for 1 yr. 2 mo. 3 da., at 6%. 877. Interest-bearing Demand Notes. 26. SAN FRANCISCO, Jan. 7, 1893. On demand, I promise to pay William Britt, or order, Seven Hundred Sixty-five 40 Dollars, value received, with interest at 6 per cent. $765,400. ARTHUR TOWNSEND. How much money will be required to pay the above note, with interest, July 15, 1894? 27. A demand note, dated Sept. 25, 1892, with interest at 8% from date, is paid Jan. 2, 1895. How much was due, the face of the note being $750? 28. Find the amount due March 4, 1894, on a note for $365.84, dated May 20, 1892, with interest from date at 7%. 29. Find the amount necessary, Oct. 16, 1896, to pay a note of $1,240, with interest at 6% from Aug. 15, 1892. 30. An interest-bearing note for $87.60 is dated April 3, 1886. How much is due on it for principal and interest Jan. 2, 1894? Rate 41%. 878. Oral Problems. 1. Find the interest on $300, for 1 year 7 months, at 4%. $12 per year is how much for 7 months? 2. On $60, for 33 days, at 6%. $3.60 for 360 days is how much for 33 days? 3. On $120, from Jan. 1, 1893, to July 1, 1894, at 5%. 6%? 5. At what rate per cent will $50 produce $6 in 2 years? 6. What is the interest on $300, at 6%, from Feb. 1 to Feb. 21? 7. What part of a year is 72 days? 8. Find the interest at 4%, for 90 days, on $150. 9. On $240, for 36 days, at 5%. 10. What is the amount of $200, for 3 years 1 month, at 6%? 11. How long will it take $1 to make $1 interest at 5% ? 12. How long will it take any sum to double itself at 6%? 13. How long will it take $14.90 to double itself at 4%? 14. At per cent per month, find the interest on $90 for 16 months. 15. 5% per year is 1% for how many days? |