21. If 9x-3y=12 and 3x-5y=7 then 6x-2y = ? A.-5 B. 4 C. 2 D. 8 Ans. D
22. There are 5 red shoes, 4 green shoes. If one draw randomly a shoe what is the probability of getting a red shoe Ans 5c1/ 9c1
23. Find selling price of a car if the cost of the car is Rs.60 and a profit of 10% over selling price is earnedAns: Rs 66/-
24. 1/3 of girls , 1/2 of boys go to canteen .What factor and total number of classmates go to canteen.
Ans: Cannot be determined.
25. The price of a product is reduced by 30% . By what % should it be increased to make it 100% Ans: 42.857%
26. There is a square of side 6cm . A circle is inscribed inside the square. Find the ratio of the area of circle to square. Ans. 11/14
27. There are two candles of equal lengths and of different thickness. The thicker one lasts of six hours. The thinner 2 hours less than the thicker one. Ramesh lights the two candles at the same time. When he went to bed he saw the thicker one is twice the length of the thinner one. How long ago did Ramesh light the two candles. Ans: 3 hours.
28. If M/N = 6/5,then 3M+2N = ?
29. If p/q = 5/4 , then 2p+q= ?
30. If PQRST is a parallelogram what it the ratio of triangle PQS & parallelogram PQRST. Ans: 1:2
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