3 years ago

Seven people can paint a bridge in 15 days.

Mathematics

1 answer:

Aleksandr [31]3 years ago

8 0

Answer:

a) 3 people will need 35 days to paint the bridge

b) p=105/t

Step-by-step explanation:

We have 7 people each one is to work 15 days, so the bridge needs a total of 7(15) days of work

7(15)=105

Then we have 3 people each one is to work t days, altogether should do a total of 105 days of work

3(t)=105

Solve for t

t=35

Substitute p for 3 in the second equation

p(t)=105

Solve for p

p=105/t

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