Qstnid -B-6- 72 Men Do A Piece Of Work In 25 Days. In How Many Days Will 30 Men Do The Same Work? - 10: Direct And Inverse Variations Class 8 Maths - Icse-viii-mathematics

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ICSE-VIII-Mathematics

10: Direct and Inverse Variations Class 8 Maths

with Solutions - page 2

Qstn# B-6 Prvs-Qstn Next-Qstn

#6
72 men do a piece of work in 25 days. In how many days will 30 men do the same work?
Ans : Men : Days : : Men : Days
72 : 25 : : 30 : x
∴ By inverse proportion
72 × 25 = 30 × x
⇒ x = (25 × 72)/30
= 60 days