Twenty-five decreased by one fifth of a number is 18. Find the number.

35

Step-by-step explanation:

We have the following equation that represents the problem:

, where x is the answer we are looking for.

We can subtract both sides by 18:

add to both sides:

multiply both sides by 5:

.

Here, x = 35

k

step-by-step explanation:

domit

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)