Question

Evaluate \dfrac14c+3d 4 1 ​ c+3d when c=6c=6 and d=7d=7.

Answer 1

The value of given expression is 22.5.

Explanation:

The given expression is

`(1)/(4)c+3d`

Where, c=6 and d=7.

Substitute c=6 and d=7 in the given expression.

`(1)/(4)c+3d=(1)/(4)* (6)+3* (7)`

`(1)/(4)c+3d=(3)/(2)+21`

`(1)/(4)c+3d=(3+42)/(2)`

`(1)/(4)c+3d=(45)/(2)`

`(1)/(4)c+3d=22.5`

Therefore the value of given expression is 22.5.