Answer:
3 11/15
Explanation:
3a : 7 : : 8 : 5
= 3a/7 = 8/5
=15a = 56
= 56/15 = 3 11/15
Answer: a=56/15
For this problems, it is important ot know how to read ratios. They can be read as fractions. Knowing this, we would use proportions to solve.
[cross multiply]
[divide both sides by 15]
Now, we know that a=56/15.
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