In a Maths test the average score of the 10 girls in a class is 15 and the average score - Maths - Comparing Quantities

Question

In a Maths test the average score of the 10 girls in a class is
15 and the average score of the 15 boys is 10 The average score of
the class in the test is

S. Usha Rani · Accepted Answer

Average score of 10 girls = 15

$\frac{t o t a l s c o r e o f 10 g i r l s}{10} = 15$

Total score of 10 girls = 15*10=150 ...(1)

Average score of 15 boys = 10

$\frac{t o t a l s c o r e o f 15 g i r l s}{15} = 10$

Total score of 15 boys = 10*15=150 ...(2)

From (1) and (2),

Total score of (10+15) 25 students =150+150=300

So, avergae score= 300/25=12

In a Maths test the average score of the 10 girls in a class is 15 and the average score of the 15 boys is 10. The average score of the class in the test is