Question

9. TS PR. What is the length of QS?

25
IS
15
12
R
P
A 15
B 20
C 22
D 24

Answer 1

`QS = 20`

Explanation:

Given

See attachment

Required

Find QS

To do this, we make use of the following equivalent ratios.

`QT : TP = QS : SR`

This gives:

`25: 15= QS : 12`

Express as fractions

`(25)/( 15)= (QS )/( 12)`

Solve for QS

`QS = (25)/( 15) * 12`

`QS = (25* 12)/( 15)`

`QS = (300)/( 15)`

`QS = 20`