Question

Mr. Mustard said: “Eight less than three times my age is 100.” How old is Mr. Mustard?

Answer 1

The answer is 36
He is 36 years old

Answer 2

Let his age be X

Writing the information out in an equation you would have:

3 times his age minus 8 would be 100

3X-8 = 100

Now we can solve for X

Add 8 to each side:
3x = 108

Divide both sides by 3

X = 108 /3
X = 36

His age is 36