Page 55 - Mathematics of Business and Finance

Chapter 1 | Review of Basic Arithmetic 35

10 3 3 2 1 1 13
17. a. ÷ b. ÷ 4 c. 2 ÷ 1 d. 23 ÷ 8
15 7 8 5 4 2 16
8 2 1 3 1 2 1 27
18. a. ÷ b. ÷ c. 3 ÷ 2 d. 10 ÷ 2
12 4 7 5 3 9 4 48
19. Maya invested one-fifth of her savings in the stock market and two-thirds in real estate. Together, what fraction of
her savings did she invest in the stock market and real estate?
20. Kyrie spent two-thirds of his money on rent and food and one-fourth on education. Together, what fraction of the
money did he spend on rent, food, and education?

2
1
1
21. A rain gauge collected 3 inches, 1 inches, and 2 inches of rain over the past three months. What was the total
2
4
3
rainfall over the three months?
3
1
1
22. Jameela worked 5 hours, 6 hours, and 3 hours over the last three days. How many hours did she work in total
4
4
2
over the three days?
2
2
23. A tank had 4 litres of water. If 1 litres leaked from the tank, how much water was left in the tank?
3
3
5
1
24. A wooden board measured 2 metres in length. It was shortened by cutting 1 metres from it. What is the new length
2
8
of the board?
3
1
25. If a wire that is 43 cm long is cut into several 1 cm equal pieces, how many pieces were there?
4
4
3
26. The product of two numbers is 9. If one number is 3 , what is the other number?
4
1 3
27. A garment factory has 40 metres of cotton fabric. If 1 metres of the fabric is required for a dress pattern, how many
4
4
dresses can be made?
1
28. A stack of plywood sheets measures 49 inches high. If each plywood sheet is three-fourths of an inch thick, how many
2
sheets of plywood are in the stack?
29. It took two-thirds of an hour for a machine to make one component. How many components can be made in 40 hours?
1
30. A bottle contained 80 mg of medicine. Each dose of the medicine is 2 mg. How many doses were there in the bottle?
2
31. Reza received a bonus of $6850. He spent two-thirds of this amount on a vacation. How much did he have left?
32. A company identified one-twentieth of the 320 bulbs that it received from a supplier as being defective. How many
bulbs were not defective?
33. Mary spent two-fifths of her money on books and one-third of the remainder on clothes. What fraction of her money
was spent on clothes?
34. Jermaine spent one-fourth of his money on rent and one-third of the remainder on food. What fraction of his money
was spent on food?
35. Ishanti travelled two-thirds of her journey by car and the remaining 20 km by bus. How far did she travel by car?
36. After selling two-fifths of its textbooks, a bookstore had 810 books left. How many textbooks were in the bookstore
initially?
1
37. It took 15 hours to complete three-fourths of a project. How long did it take to complete the entire project?
4
1 1
38. Cheng walked 5 km in 1 hours. How many kilometres did he walk in 1 hour?
2
4