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Math Helpline

Description

Q:

If 80% of A = 50% of B and B = x% of A, then the value of x is :

A) 400 B) 300
C) 160 D) 150

Answer

160

Solutions

(3) According to question, A x 80/100 = B x 50/100 or B=1.6A B = 160% of A x = 160

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Q:

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

A) 12 days B) 16 days
C) 15 days D) 18 days

Answer

15 days

Solutions

Whole work will be done in (3 x 5) = 15 days.

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