A concrete slab require between 10 and 12 yd3 (3= 3rd power) of concrete. If 2.5 yd3 (3= 3rd power) of concrete can poured each hour. how long will it take to pour the slab? please help!
Write a compound inequality for answer!
2006-09-17 16:06:04 · 3 answers · asked by jason 1 in Science & Mathematics ➔ Mathematics
The slab requires 10 to 12 cubic yards
The 2.5 cubic yards can be poured per hour.
Let X equal the number of hours to pour 10-12cubic yards of concrete: Then
2.5X=10 X=4 hrs.
2.5X=11 X=4.4 hrs.
2.5X=12 X=4.8 hrs.
It will require between 4 - 4.8 hrs. to pour the slab.
2006-09-17 16:14:30 · answer #1 · answered by LeAnne 7 · 0⤊ 0⤋
instead of using cubic yards, think in terms of dollars. you want to buy lunch, and it costs between 10 and 12 bucks. you are making 2.5 bucks an hour. how many hours will it take for you to get lunch? Same principle, different units.
If it takes only 10 bucks how long will it take you to make that amount.
If it takes 12 bucks, how long will it take you?
2006-09-17 23:16:06 · answer #2 · answered by Jay 3 · 0⤊ 0⤋
more info!!! what temp. what mix how thick what time off day or weight concretes fun Farmers Concrete LLC.
2006-09-17 23:18:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋