70004

Question

P, Q and R stand for three different numbers.

The average of P and Q is 30.

The average of Q and R is 45.

P + Q + R = 120

Calculate the values of P, Q and R.

Worked Solution

Test each statement:
Average P + Q2\dfrac{\text{P + Q}}{2} = 30
P + Q = 60

∴\therefore Eliminate first and third option:
Average Q + R2\dfrac{\text{Q + R}}{2} = 45
Q + R = 90

∴\therefore Eliminate second option:

=> {{{correctAnswer}}}

Variant 0

DifficultyLevel

650

Question

P, Q and R stand for three different numbers.

The average of P and Q is 30.

The average of Q and R is 45.

P + Q + R = 120

Calculate the values of P, Q and R.

Worked Solution

Test each statement:
Average P + Q2\dfrac{\text{P + Q}}{2} = 30
P + Q = 60

∴\therefore Eliminate first and third option:
Average Q + R2\dfrac{\text{Q + R}}{2} = 45
Q + R = 90

∴\therefore Eliminate second option:

=> P = 30, Q = 30, R = 60

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
correctAnswer
P = 30, Q = 30, R = 60

Answers

Is Correct?Answer
x

P = 30, Q = 50, R = 30

x

P = 30, Q = 30, R = 50

x

P = 50, Q = 30, R = 30

✓

P = 30, Q = 30, R = 60

Tags

  • staging_suejones