There were some pencils in a pencil box. Zoe added 7 more pencils to the pencil box. Now there are 24 pencils in the box. How many pencils were in the box to start with?

Question

Cole Walter

Mathematics

15 April, 14:47

There were some pencils in a pencil box. Zoe added 7 more pencils to the pencil box. Now there are 24 pencils in the box. How many pencils were in the box to start with?

+3

Answers (2)

Know the Answer?

Hezekiah Kelly · Answer 1

This problem can be solved using subtraction. We want to know how many pencils were in the box before the 7 pencils were added, so we must subtract 7 from 24.

24 - 7 = 17.

There were 17 pencils in the box to start with.

Stacy Avery · Answer 2

So if Zoe added 7 more pencils then all you have to do is just do the opposite

being the equation stated

X+7=24

X being the number of pencils before added

To find the answer just do the opposite

24-7=X

and X=17