Successive discount of 10% , 20% and 50% will be equivalent to a single discount of-

54

64

52

26

f three numbers, the second is thrice the first and the third number is three-fourth of the first. If the average of the three numbers is 114, the largest number is

1213

345

276

216

A and B are two alloys of gold and copper prepared by mixing metals in the ratio 7:2 and 7:11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be-

5:7

1:2

7:5

2:1

ARIJIT reduces the number of his employees in the ratio 9 : 8 and increases their wages in the ratio 14 : 15. If the original wage bill was Rs. 189,900, find the ratio in which the wage bill is decreased-

18000 : 18900

18000:19000

1:1.5

4.7

Gora bought some oranges at Rs. 40 a dozen and an equal number at Rs.30 a dozen. He sold them at Rs. 45 a dozen and made a profit of Rs.480. The number of oranges, he bought, was-

12

48

45

36

A jar contain 10 red marbles and 30 green ones. How many red marbles must be added to the jar so that 60% of the marbles will be red?

35

27

25

28

A car covers 1/5 of the distance from A to B at the speed of 8 km/hour, 1/10 of the distance at 25 km per hour and the remaining at the speed of 20 km per hour. Find the average speed of the whole journey-

12.625 km/hr

15.625KM/H

15.625KM/H

10.725KM/HR

A retailer offers the following discount schemes for buyers on an article-

I. Two successive discounts of 10%

II. A discount of 12% followed by a discount of 8%.

III. Successive discounts of 15% and 5%

IV. A discount of 20%

The selling price will be minimum under the scheme

1

2

3

4

The average marks of 40 students in an English exam are 72. Later it is found that three marks 64, 62 and 84 were wrongly entered as 60, 65 and 73. The average after mistakes were rectified is-

71.2

70

72.1

25

Ankit Walking at 3 km per hour, reaches IBT 5 minutes late. If he walks at 4 km per hour he will be 5 minutes early. The distance of IBT from his house is-

2KM

3KM

5KM

4KM