Two masons

Mason A can build a wall in 30 days, while mason B can build it in 40 days. If they build it together and get a payment of USD 7000, what is B's share?

Correct answer:

s2 =  3000 USD

Step-by-step explanation:

a=30 d b=40 d  s=7000 USD  s1:s2 = b:a s2:s1 = a:b s1+s2=s  s2 (b/a)+s2=s s2 (40/30)+s2=7000  70s2=210000  s2=70210000=3000=3000 USD  s2=3000   Verifying Solution:   s1=ss2=70003000=4000 USD



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