Question

Direct and inverse variations
A and B can paint a house in 15 days. A alone can paint the house in 18 days. How much time would B take to paint the house

Answer 1

Answer:

Time taken by Aand B to paint the house=15day

Work done by A and B=1/15.

Time taken by A to paint the house=18 days.

Work done by A=1/18.

Work done by B=(work of A&B-work of only A)

=1/15-1/18

= (6-5)/90

=1/90.

.: Time taken by B to paint the house is 90 days.

Step-by-step explanation:

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