Welcome to your Numbers(Senior Class Math Study by Topics) NAME EMAIL PHONE NUMBER 1. The number 83ten, converted to base seven is 641 base 7 61 base 7 146 base 7 16 base 7 None 2. How long will it take for a sum of money invested at 8% simple interest to double the original sum? 8 yrs 10.5 yrs 12.5 yrs 12 yrs None 3. A businessman invested a total of $200,000 in two companies which paid dividends of 5% and 7% respectively. If he received a total of $11,600, how much did he invest at 7%? $100,000 $80,000 $140,000 $160,000 None 4. A worker is allowed 10% of her income tax free and pays 15% on the remainder.If her tax amounts to $2,970, her income is $28,000 $20,000 $25,000 $22,000 None 5. A number of chocolates were shared out among three children Kafeel, Tara and Kameel in the ratio 2:3:4 respectively. If Kameel got 8, how many sweets were shared out? 24 36 18 12 None 6. In a test taken by 40 boys and x girls, the mean scores were 5.5 and 6 respectively for the boys and girls. If the total score was 412, the value of x is 38 32 36 34 None 7. Two brothers Kameel and Kafeel owned a business in which the ratio of shares was 3 : 2 respectively. Kafeel later sold ½ of his share to Kameel for £12,000. The value of the business was £60,000 £84,000 £48,000 £24,000 None 8. The number 1101012 converted to base ten equals to 23 4 49 53 None 9. Given that P = {1, 3, 4} and Q = {2, 3, 4}, then P∩Q is {2, 3} {2, 4} {3, 4} {1, 2} None 10. If 1012 x P2 = 111102, find the value of P 101 10 110 11 None 11. The simple interest rate per annum at which a sum of N10,000 accumulates to N12,400 in three years is 17/2% 11% 8% 9% None 12. If (x2)3 = 110112, the value of x is 10 100 11 101 None 13. What is the value of 54106 - 25356 2431 base 6 3141 base 7 4135 base 7 3241 base 6 None 14. 33 of the students in a grade 9 class play either football or table tennis. If 22 students play football and 18 play table tennis, how many students play football only? 15 17 11 7 None 15. Three girls, Tireni, Jessy & Pryanka shared a packet of sweets. If Tireni received 2/5 of the sweets, Jessy received 5/9 of the remainder and Pryanka got 8 sweets. How many sweets were in the packet? 25 20 40 30 None 16. The profit on a business was shared between two partners Tolu and Gbemi in the ratio 3 : 4. If Gbemi received N8,000 more than Tolu, the profit was N56,000 N42,000 N24,000 N32,000 None 17. Evaluate110102 - 110112 + 100112 11000 base 2 1001 base 2 11001 base 2 10010 base 2 None 18. A rectangle is formed from a square by increasing the latter's length by 50% while reducing its width by 50%. The ratio of the area of the rectangle to that of the square is 3 : 4 3 : 2 4 : 3 2 : 3 None 19. If 14twelve = yeight, the value of y is 20 14 15 16 None 20. The universal set U contains all integers. Subsets of U are defined asP = {x : x ≤ 3}Q = {x : -5 < x < 12}R = {x : -2 ≤ x < 5}P ∩ Q = ? {1, 2, 3} {0, 1, 2, 3} an infinite set {-4, -3, -2, -1, 0, 1, 2, 3} None 21. The ratio of the age of a father to that of his son is 9 : 2. If the son is now 8 years old, the ratio of their ages in 4 years time will be 5 : 1 10 : 3 3 : 1 9 : 4 None 22. If R = {2, 4, 6, 7} and S = {1, 2, 4, 8} find R∪S {4} {2,7} {} {1, 2, 4, 6, 7, 8} None 23. A plumber's daily wage is £80 for the first 10 days and £100 for the next 9 days. Find the daily wage for the remaining 6 working days of the month, if his average daily wage for the month is £90.80 £110 £105 £95 £92.50 None 24. The baking recipe for a piece of brownie cake is given as 1.5 cups of sugar and 3.5 cups of flour. If a cake is baked, based on this recipe with a total of 40 cups of sugar and flour, the number of cups of sugar used is 20 15 8 12 None 25. A sum of £50,000 was invested by two partners in a project which yielded £90,000. If the profit was shared in the ratio 3 : 5, the difference between the amounts received by the partners is £40,000 £25,000 £15,000 £10,000 None 1 out of 25
