10 workers can paint a building in 21 days. If work has to be finished in 15 days, how many extra workers are required?

10 workers - 21 days

x workers -15 days

cross multiply

15×10 =21×x

150=21x

:. x=150÷21

x=7.14

approximately 7 workers

10 workers - 21 days

x workers -15 days

cross multiply

15×10 =21×x

150=21x

:. x=150÷21

x=7.14

approximately 7 workers

Step-by-step explanation:

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

15 batches are the most you can make

step-by-step explanation: