Question

HELP PLEASE!!!!!
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Ms. Reynolds just purchased a house and needs to replace her driveway with either asphalt or concrete. Asphalt costs $75 per cubic yard but must be replaced every 10 years. Concrete costs $175 per cubic yard but lasts 3 times as long as asphalt. Which is closets to the amount of money Ms. Reynolds will save per cubic yard for the first 30 years if she chooses concrete?
(a. $50
(b. $100
(c. $25
(d. $250

Answer 1

@kidrah69 help

Answer 2

If she had used asphalt then every 10 years she needs to replace, yes ?

in 30 years she needs to replace it 3 times, how much it would cost ?

Answer 3

i know the answer but dont know how to do it

Answer 4

cost for replacing asphalt "one" time = $75
cost for replacing asohalt "three" times = ?

Answer 5

90

Answer 6

try again

Answer 7

225

Answer 8

yes! subtract the concrete cost $175 from that to get the saved amount per cubic yard :

\[225 - 175 = ?\]

Answer 9

50

Answer 10

Oh thx

Answer 11

thats it!

Answer 12

good job

Answer 13

Thx