Math Homework
1. A merchant makes a profit of 57 yen 87 sen 9 ri per month at his business. How much will he make in two years?
2. One bolt of coarse kimono silk costs 12 yen 86 sen 5 ri. How much will it cost to buy 563 bolts?
3. There are 627 boxes of peaches that hold 278 peaches each. There are also 587 boxes of peaches that hold 327 peaches each. What is the total number of peaches?
4. If from the previous problem, you transfer the 627 boxes of peaches to boxes which hold 54 peaches per box and you transer the 587 boxes of peaches to boxes which hold 60 peaches per box, how many boxes will there be? Compare the number of boxes to the number of boxes in the previous problem.
5. If you save 12,345 yen 67 sen 8 ri in 12 years. How much do you have in 34 years?
6. In one year there are 365 days. The average cost of living for one person for one day is 58 sen 6 ri for one person. How much would a family of seven spend in 15 years?
7. At our school there are eight classes of boys with 58 students each and seven classes of girls with 57 students each. The tuition for the school is 60 sen per month. However, students do not pay tuition during the one month summer vacation. What is the total amount of tuition the school collects for one year?
8. If from the previous problem it costs 47 sen 5 ri a month to pay for school supplies, how much does it cost for three students for one year of tuition and school supplies? How much does it cost for tuition and supplies for all of the students combined for one year?
9. A family of seven people spend an average of 847 yen 91 sen 7 ri for living expenses each year. How much does one person spend per month?
10. The population of Kyoto is 510,000 people. In one day, one person eats three go five shaku of rice. The cost of 1to of rice is 19 sen 8 ri. How much does it cost for the population of Kyoto to eat rice for one year?
11. In a proportional equation, it is possible to put x (the unknown) in any place in this equation y=ax+b. What is the reason for finding the value of x?
12. Convert these measurements to Western measurements.
1 meter=3.3 shaku
1 gram=.2667 monnme
1 pound=16 (?)
1 litre= 5.5435 go
1 mile=80 (?)
1 knot=16 cho 58 ken 9 shaku
1 ounce=.838 sun
13. At what time do the hands on a face of a clock form an angle of 120 degrees between 9 and 10 o'clock? What fraction is this angle of the whole clock?
14. What does it mean when a gold watch, a ring, and other gold objects are 23k, 22k, or 20k?
15. A steam train goes up a hill with a gradation of 1/90. If the steam train goes up a hill with a gradation of 1/110, and the distance is 1 ri, then how far up has it gone from its starting point?
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