At the school book sale, Michael bought 3 books for $6. Darnell bought 5 books for $10. Are these rates proportional?
2 answers:
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Answer:
a. 18
b. 45
Step-by-step explanation:
The question states that 2/5 of the class are girls which means 3/5 are boys:
Divide this value by 3 to get the value of :
27 ÷ 3 = 9
Multiply this by 5 to find , the total pupils in the class:
9 x 5 = 45
As the number of girls is of the total pupils:
9 x 2 = 18
So there are 18 girls in the class which has a total pupil size of 45.
Hope this helps!