RRB NTPC Mains or Stage 2 Model Paper 4 with solutions

Question : 32 of 120

Marks: +1, -0

40 men can cut 60 trees is 8 hrs. If 8 men leaves the job how many trees will be cut in 12 hours ?

Solution:

(a)

M_1 = 40, D_1 = 8

(As days and hrs both denotetime)

W_1 = 60

(cutting of trees is taken as work)

M_2 = 40 – 8 = 32, D_2 = 12, W_2 = ?

Putting the values in the formula

M_1 D_1 W_2 = M_2 D_2 W_1

We have ,

40 × 8 × W2 = 32 × 12 × 60

or,

{W_2 ={32 ×12× 60}/{40× 8} = 72

trees.

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