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Q.

If cost of 3cricket ball = cost of 2 pairs of leg pads.
If cost of 3 pairs of leg pads =cost of 2 pairs of gloves.
If cost of 3 pairs of gloves = cost of 2 cricket bats.
If a cricket bat costs Rs 54,
What is the cost of a cricket ball?


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a

12

b

14

c

15

d

16

answer is D.

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Detailed Solution

Concept: we’ll use the unitary method to find the cost of a cricket ball. This is a method in which you find the value of a unit and then the value of a required number of units. This method is used for evaluating the price of goods. We’ll start with cricket bat cost and gloves cost than leg pads cost and then 3 cricket ball cost.
It’s given that the cost of a cricket bat is Rs 54.
Cost of a cricket bat = Rs 54
Therefore,
Cost of 2 cricket bats = Rs 2×54 
Cost of 2 cricket bats = Rs 108
Given,
Cost price of 2 cricket bat = cost price of 3 pairs of gloves=108 
So, cost of 3 pairs of gloves is Rs 108.
Cost of a pair of gloves is=Rs 1083=36
Therefore,
Cost of 2 pairs of gloves is= Rs2×36=72
Given,
Cost of 2 pairs of gloves = cost of 3 pairs of leg pads 72
So, cost of 3 pairs of leg pads is Rs 72.
Cost of a pair of leg pads=Rs 723 =24
Therefore,
Cost of 2 pairs of leg pad = Rs 2×24=48
Given,
Cost of 2 pairs of leg pads = cost of 3 cricket balls= 48
So, cost of 3 cricket balls is Rs 48.
Therefore,
Cost of a cricket ball= Rs 483=16
Hence, the cost of a cricket ball is Rs 16.
 
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