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Makovka662 [10]
3 years ago
11

30 girls and boys have planned for a picnic. there is a ratio of 3 girls to 7 boys how many boys are there?

Mathematics
1 answer:
adell [148]3 years ago
4 0
To solve the given problem We can consider, 30% are girls of 30 people 70% are boys in 30 people In order to get the number, we just multiply the total number of people with the percentage of the designated target populace.
<span><span>1.    </span>30 x 0.3 = 9 girls</span> <span><span>
2.    </span>30 x 0.7 = 21 boys</span> <span><span>
3.    </span>21 boys + 9 girls = 30 people</span>

Hence, there are 21 boys.



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