Question
CSATHardPrelims 2018Maths

A lift has the capacity of 18 adults or 30 children. How many children can board the lift with 12 adults?

Explanation

The lift's capacity is equivalent to 18 adults or 30 children, meaning:

1 adult = 30÷18=5330 \div 18 = \frac{5}{3} children.

If 12 adults are already in the lift, their capacity in terms of children is: 12×(53)=2012 \times (\frac{5}{3}) = 20 children.

Remaining capacity for children = 3020=1030 - 20 = 10 children.

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