The length of a red string is 7 less than 8 times the length of a yellow string.



Find the length of the red string when the length of the yellow string is 5.

Length of red string is 33

Solution:

Let length of red string = a

Let length of the yellow string = b

Given that,

length of the yellow string is 5

b = 5

The length of a red string is 7 less than 8 times the length of a yellow string

Therefore,

a = 8b - 7

Substitute b = 5

a = 8 (5) - 7

a = 40 - 7

a = 33

Thus length of red string is 33