Jason burned 1,400 calories friday playing 1 hour of basketball and canoeing for 2 hours. on saturday, he spent 2 hours playing basketball and 3 hours canoeing and burned 2,500 calories. how many calories did he burn per hour when playing basketball?

He burned 800 calories per hour playing basketball.

Step-by-step explanation:

Let be "b" the amount of calories  per hour Jason burned playing basketball and "c" the amount of calories  per hour Jason burned canoeing.

Set up a system of equations:

You can apply Elimination Method:

Therefore, you get:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870