Problema Solution
Problem: It takes two friends a total of 4 hours to paint 550 square feet of home. How many hours would it take for the two to paint a total of 1650 square feet of home?
*write a proportion and then cross-multiply to get your solution!
Answer provided by our tutors
the rate of painting is constant that is 550/4 ft^2 per hour
let 'x' be the time needed to paint total of 1650 ft^2
since the rate is constant we have the following proportion
550 : 4 = 1650 : x
crossumultiply
550*x = 4*1650
x = 12 hours
it will take 12 hours to paint a total of 1650 square feet.
the rate of painting is constant that is 550/4 ft^2 per hour
let 'x' be the time needed to paint total of 1650 ft^2
since the rate is constant we have the following proportion
550 : 4 = 1650 : x
cross-multiply
550*x = 4*1650
x = 12 hours
it will take 12 hours to paint a total of 1650 square feet.