## Quantitative Ability Questions

December 9th, 2009 Posted in Quantitative Ability

# Quantitative Ability Questions:

1. A shop has 3 types of candies costing Rs. 1, Rs. 2 and Rs. 3. Neha has Rs. 24 and wants to buy exactly 12 candies comprising at least one of each kind. In how many different ways can she buy candies with all her money?

a) 5

b) 7

c) 9

d) 8

e) 6

2. Two barrels A and C contain alcohol and water in the ratio 1:a  and 1:c , respectively. Equal quantity of mixtures from barrels A and C are mixed to get a mixture with alcohol and water in the ratio 1:b , Where b is the arithmetic mean of a and c . What can be the value of a + b + c If a, b and c are integers.

a) 14

b) 10

c) 15

d) 8

e) 17

Related posts:

Email This Post

### 10 Responses to “Quantitative Ability Questions”

1. Hitesh Says:

1) a.. easy to solve
2) c
because addition sud be a multiple of 3

2. Govind Says:

yes…

1.a
2.c..

3. Uttam Says:

1. A.
EXPLANATION:-
as y hav to bye at least one candy from each type
so you have Rs 18 to bye 9 candy with different combination.
Now x+2y+3*(9-x-y)=18 (Say x and y no. of candy with Rs 1 AND 2 RESPECTIVELY)
or 2x+y=9
or y=9-2x
from the equation
x can hold 0,1,2,3 and 4.
so Ans = 5=A

2. C.
Explanation:-
As a,b,c are in AP,
so its a+c=2b
so a+b+c=3b
so ans is multiple of 3.

4. Govind Says:

explanation..

x+2y+3z= 24……………..(1)

x+y+z=12…………………(2)

sustituting value of x in 2 we get..

y+2z=12
The possible solutions of x,y and z are
(5,2,5),(4,4,4),(3,6,3),(2,8,2),(1,10,1)

2nd one..
by taking b=(a+c)/2 in the equations we get c=a.

So a+b+c = 3/2(a+c) = 3a= 3c

From options only c is divisible by 3.

5. Sumedha Says:

1. (b)

x+2y+3z=24 (i)
x+y+z=12 (ii)
From (i) and (ii)
y+2z=12
Thus, (y,z) takes values (0,6),(2,5),(4,4),(6,3),(8,2),(10,1),(12,0)

2. (c)
a+b+c
=a+[(a+c)/2]+c
=3(a+b)/2
=3b
b is a valid interger
Hence, 3 and b are factors of the answers.
Thus, 15

6. Uttam Says:

Hi Govind and Sumendha,
I think u guys forgot to consider the condition that each candy shoud be atleast one.So answer is 5 not 7 for question no. 1.