Bricklayers

8 bricklayers build a house for 630 days. How many bricklayers have to add after 150 days, so then the whole building completed in (next) 320 days?

Correct result:

n =  4

Solution:


150/630+(n+8)•320/(630•8)=1

40n = 160

n = 4

Our simple equation calculator calculates it.



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