SOLUTION: At a picnic, the ratio of adults to children was 7 : 4.There were 15 more adults than children. How many people were at the picnic?

SOLUTION: At a picnic, the ratio of adults to children was 7 : 4.There were 15 more adults than children. How many people were at the picnic?

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Question 364421: At a picnic, the ratio of adults to children was 7 : 4.There were 15 more adults
than children. How many people were at the picnic?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the number of adults, C children.
1.
2.
From eq. 1,

From eq. 2,

Substitute from eq. 1,

Then from eq. 2,

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