Question

40 boys paint a house in 96 days by working 9 hrs/day. How many hrs per day 48 boys need to work so they can paint the house in 45 day​

Answer 1

Answer:

16 hours per day

Step-by-step explanation:

by chain rule method

m1×d1×h1=m2×d2×h2

m=men

d=day

h=hour

40×96×9=48×45×x

x=16

Answer 2

Answer:

48 boys need to work for 16 hours per day so they can paint the house in 45 days .

Given:

40 boys paint a house in 96 days by working 9 hrs/day

To find:

number of hours per day that 48 boys need to work so they can paint the house in 45 day

Solution:

M(1) × D(1) × H(1) = M(2) × D(2) × H(2)

where,

M= man

D= day

H= hours

40 × 96 × 9 = 48 × 45 × H(2)

H(2) = 16.

Hence, 48 boys need to work for 16 hours per day so they can paint the house in 45 days .

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