Step-by-step explanation:
ten students.
4(10)+95=135
6(10)+75=135
4x+95=6x+75
-75+4x+95=6x+75-75
4x+20=6x
-4x+4x+20=6x-4x
20=2x
(20=2x)/2
x=10
Answer:
1.5 x 500=x
Step-by-step explanation:
We know that "percent" means "out of 100" and "of" means multiply. Using that knowledge, we can say 150/100 x 500 is the answer. 150/100 is 1.5, so the equation could also be 1.5 x 500=x
Answer:
340
Step-by-step explanation:
240 + 100 = 340
Answer:
8.5 h = 510 min
Step-by-step explanation:
An hour is equal to 60 minutes. Half an hour is 30 minutes.
We can break "8.5" into 8 hours and 0.5 of an hour (which is 30 minutes).
Knowing this, we can multiply 8 by 60 since each hour is 60 minutes. We then get 480. We still need to add the remaining 0.5 of an hour (30 minutes) so we add 480 + 30. We then get 510.
Therefore 8.5 hours = 510 minutes. Hope this helps!
