. 3 men working together will take 18 hours to build a wall containing 1200 bricks. How long will 5 men take to build a wall containing 4500 bricks?
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Step-by-step explanation:
m1d1/w1 = m2d2/w2
3 × 18/ 1200 = 5×d2/ 4500
d2 = 81/2
= 40.5 hrs
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