Jeremy cleans his house in 2 1/2 hours. Hunter cleans his in 31/4 hours. How much longer does it take Hunter to clean a house than Jeremy?

3/4

Step-by-step explanation:

Find common denominators. convert 1/2 to 2/4

3 1/4 - 2 2/4= 3/4

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.