RRB Group D 1-Dec-2013 Shift 1 Solved Paper

Question : 1 of 100

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In a hostel of 50 girls, there is food provision for 40 days. If 30 more girls join the hostel, the food provisions will last for_________.

Solution:

(3) 50 girls have food provision for 40 days.
When 30 more girls join the hostel, let the food last for

x

days long.
According to the question,

50 × 40=(50+30) × x

⇒ x=\;{50 × 40}/{80}=25

days

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