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SSC CGL Tier 1 :: Quantitative Aptitude QA Test 54

Quantitative Aptitude » QA Test 54 » General Questions - Discussion

1 .


A person has four iron bars whose lengths are 24 m, 36 m, 48 m and 72 m respectively. This person wants to cut pieces of same length from each of four bars. What is the least number of total pieces if he is to cut without any wastage?

[ A ]    10
[ B ]    15 right
[ C ]    20
[ D ]    25
Answer : Option B
Explanation :
24 = 12 $\times$ 2,

36 = 12 $\times$ 3,

48 = 12 $\times$ 4,

and 72 = 12 $\times$ 6

HCF (24, 36, 48, 72) = 12

Total pieces = 2 + 3 + 4 + 6 = 15
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