How to solve this problem
2 answers:
Answer:
PR = 180 cm
Step-by-step explanation:
Given PQ : QR = 7 : 3 = 7x : 3x ( x is a multiplier )
PQ - QR = 72, substitute values
7x - 3x = 72
4x = 72 ( divide both sides by 4 )
x = 18
Thus
PR = PQ + QR = 7x + 3x = 10x = 10 × 18 = 180 cm
Answer:
180
Step-by-step explanation:
PQ:QR= 7:3
PQ-QR=72
- 7x- 3x= 72
- 4x= 72
- x= 72/4
- x=18
- 7x= 126, 3x= 3*18= 54
PQ= 126 cm, QR= 54 cm
PR= PQ+QR= 126+54= 180 cm
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