Q. A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is
1) 1.4 cm
2) 1.8 cm
3) 2.1 cm
4) 2.5 cm
Q. The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years, while that of the girls is 15.4 years. What is the ratio of boys to girls in the class?
1) 1:2
2) 3:4
3) 3:5
4) 2:3
Q. There were 984 mangoes on 12 trees of a mango-garden. What will be the average number of mangoes per tree after taking down 26 mangoes in average from 5 trees and 38 mangoes in average from 7 trees?
1) 53
2) 49
3) 45
4) 39
Q. Rs. 25,000 is borrowed at compound interest at the rate of 3% for the first year, 4% for the second year and 5% for the third year. The amount to be paid after 3 years is
1) Rs. 28,119
2) Rs. 29,118
3) Rs. 28,129
4) Rs. 28,117
Q. A bag contains Rs. 121 in the form of 1 rupee, 50 paise and 25 paise coins in the ratio 1:2:3. Find the number of each type of coins (1 Re, 50P, 25P respectively).
1) 40, 92, 140
2) 42, 92, 132
3) 45, 90, 132
4) 44, 88, 132
Q. A dealer buys a table listed at Rs. 1,500 and gets successive discounts of 20% and 10%. He spends Rs. 20 on transportation and sells it at a profit of 20%. The selling price of the table is
1) Rs. 1,320
2) Rs. 1,350
3) Rs. 1,360
4) Rs. 1,380
Q. A man sells an article at a profit of 25%. If he had bought it at 20% less and sold it for Rs. 10.50 less, he would have gained 30%. Find the cost price (in rupees) of the article.
1) 50
2) 20
3) 25
4) 35
Q. A pair or articles was bought for Rs. 37.40 at a discount of 15%. What must be the marked price of each of the articles?
1) Rs. 11
2) Rs. 44
3) Rs. 33
4) Rs. 22
Q. A and B can together do a piece of work in 6 days. If B can do the work by himself in 8 days, how many days will A take to do the work independently?
1) 24 days
2) 14 days
3) 2 days
4) 22 days
Q. 13% of a number exceeds 5% of the same by 16. The number is
1) 500
2) 450
3) 300
4) 200
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