Question by Quoc Tran Anh Le - Discuss with MathYouLike

Quoc Tran Anh Le Coordinator

20/08/2018 at 08:06

Here’s a new twist to a puzzle. I’ll give you the question and answer here:
If 40 is added to \(\dfrac{1}{2}\) of a number, the result is triple the number.
The answer: 16
Now you show me how to solve this puzzle using an equation.

Math Puzzles

List of answers

Phương Linh Lê Ngọc 21/08/2018 at 14:21

We have:

40 + 1/2a = 3a

=> 40 = 3a - 1/2a

= 5/2 a

=> a = 40/5*2 = 16
Quoc Tran Anh Le selected this answer.

Weekly ranking