Primary school has 140 girls and 90 boys. The probability that a girl wears glasses is 0.4
The probability that a boy wears glasses is 0.3
Estimate the number of pupils wearing glasses in the school.

140*0.4=56

90*0.3=27

56+27=83

Hope This Helps!!!

the answer is 6.5 people are wearing glasses that means that 6-7 people are wearing glasses

yes. we do proportions in probabilities.

step-by-step explanation:

when the line is solid:

when the line is dashed:

this > inequality sign means:

this < inequality sign means:

this > inequality sign means:

this < inequality sign means:

about the problem:

srry i'm not done ! i'll