Anna and John both receive stock as part of their remuneration. Anna receives $400 worth plus a bonus of 12%. John receives $300 worth plus a bonus of 20%. What is the difference between the values of the two bonuses?
Answer: A
Explanation: Anna receives a bonus of ($400 * 0.12 =) $48. John receives a bonus of ($300 * 0.20 =) $60. The difference between their bonuses is therefore $12.
Components X,Y and Z are ordered in the ratio 1:5:4. How many Z components will be in an order for 8000 components?
Explanation: The components are ordered in the ratio 1:5:4 and the total order is for 8,000. To work out the numbers of each add 1+5+4 = 10. Divide $8,000 by 10 = 800. You can then calculate that the number of Z components will be (800 * 4 =) 3,200.
A bank offers 10% per annum interest which is calculated and added at the end of the year. Another bank offers 10% per annum which is calculated and added every six months. What is the difference on a deposit of $800 after one year?
Explanation: At the bank paying 10% interest calculated each year, the amount will be $880 ($800 * 1.10) at the end of the first year. At the bank paying 10% per annum added every 6 months, the amount will be $840 ($800 * 1.05) at the end of the first six months and $882 ($840 * 1.05) at the end of the year. Therefore the difference will be $2.00.
It costs a manufacturer X dollars per component to make the first 500 components. All subsequent components cost X÷5 each. When X = $4.50 How much will it cost to manufacture 4,000 components?
Answer: C
Explanation: The first 500 components are $4.50 each which gives $2,250. The 3500 subsequent components cost $0.90 each which gives $3,150. Therefore the run of 4000 components will cost $5,400.
Identify the missing number.
2 6 44 8 10 15 19 ? 21 23
Answer: D
Explanation: The numbers on the bottom row are 13 more than those on the top row. Therefore the missing number is 44 + 13 = 57.
