Question

Mrs. Duncan measured the lengths of a crayon and a pencil. The pencil is double the length of the crayon. The sum of their length is 24 centimeters. What are their lengths?

Answer 1

Answer: The length of pencil is 16 centimetres and length of crayons is 8 centimetres

Explanation:

Let the length of crayon =
`x`

Length of a pencil =
`2x`

As according to question that the sum of their length is 24 centimetres

So we have

`x+2x=24\\\\\Rightarrow 3x= 24 \\\\\Rightarrow x= (24)/(3) =8`

Therefore the length of crayon = 8 centimetres

Length of pencil=
`2x= 2* x = 2* 8 =16` centimetres

Hence, the length of pencil is 16 centimetres and length of crayons is 8 centimetres