SSC CGL 2022 PYQ — Question 57

SSC CGL - 06 Dec 2022 - Shift 1 • Quantitative Aptitude • Q57

Sonali applied for a job as a Science teacher in a school. In the job test, she scored 8 in Physics, 8 in Chemistry, 6 in Biology, and 6.5 in the interview. For calculating the final score, weightage of 2, 3, 3, and 4 were assigned to Physics, Chemistry, Biology, and interview, respectively. What is the weighted average score of Sonali?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is Option 1 i.e. 7.

In this question,

Weighted Average = Sum of (number × weighing factor)/Sum of all weights

Now,

The weighted average score of Sonali = 2×8+3×8+3×6+4×6.52+3+3+4{ 2 \times 8 + 3 \times 8 + 3 \times 6 + 4 \times 6.5} \over {2 + 3 + 3 + 4} 

⇒ (16 + 24 + 18 + 26)/12

⇒ 841284 \over 12  = 7