Question

10 to 20

Ecology If you recycle one aluminum can, you save enough energy to
run a TV for four hours.
gis Jad
a. Write the ratio of cans to hours.
b. Marti's class recycled enough aluminum cans to run a TV for 818
2,080 hours. Did the class recycle 545 cans? Justify your answer using
equivalent ratios.

Answer 1

a. The ratio of cans to hours is 1 can to 4 hours (1:4). b. Marti's class recycled 520 cans, not 545 cans.

Step-by-step explanation:

a. To find the ratio of cans to hours, we can use the information provided: recycling one aluminum can saves enough energy to run a TV for four hours. Therefore, the ratio is 1 can to 4 hours.

b. Marti's class recycled enough cans to run a TV for 2,080 hours. We can set up a proportion to find the number of cans: 1 can / 4 hours

= x cans / 2,080 hours.

Cross multiplying, we get 4x = 2,080.

Solving for x, we find x = 2,080 / 4

= 520.

Therefore, Marti's class recycled 520 cans, not 545 cans.