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CDS ll Mathematics ll Arithmetic ll 11-01-2018

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Question 1

Consider the following statements:
I. Shop gives 20% discount on purchasing garments.
II. Shop gives two successive discounts of 10% on garments.
From which shop a consumer purchase to get more benefits?

Question 2

A seller brought a quintal tomato to sell. He sold half of tomato at 20% profit. One third of the remaining at 9% profit and at the time of leaving he sold rest of them at 15% loss. What is the overall profit % in the selling?

Question 3

40% of is 4 more than 80% of and y is 85 lesser than Find :

Question 4

A boy can do a work in 20 days and a girl can do the same job in 30 days. Girl started working alone. After 5 days boy join her. 5 days before the work finished the girl left. For how long they worked together?

Question 5

The concentration of alcohol in three different mixtures A, B and C of alcohol and water is 1/2, 3/5 and 4/5 respectively. If 2 liters of A, 3 liters of B and 1 liter of C are taken out and mixed together then the ratio of water and alcohol in the new mixture formed is:

Question 6

There are n zeros appearing immediately after the decimal point in the value of (0.2)25. It is given that the value of The value of n is

Question 7

A alone takes 4 days more than A and B together take to complete a task, while B takes 9 days more than A and B together take. If they work together, they can finish the task in:

Question 8

A grocer mixed two different rice worth Rs. 58/kg and Rs. 70/kg respectively. To gain a profit of 10% he sold the mixed rice at Rs. 66/kg. At what ratio he mixed the rice?

Question 9

A car travels along the four sides of a square at speeds v, 2v, 3v, 4v respectively. If u is the average speed of the car in its travel around the square, then which one of the following is correct?

Question 10

If length of a rectangle is doubled and breadth is triplet, the percentage changed in its area is:
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Jun 19CDS & Defence