If a, b, c are in proportion. Find 'a'if b= 15 and c = 40.
plz explain me step by step... the answer is 45/8..only explain step by step plz
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Answer:
45/8
Step-by-step explanation:
When three numbers are in proportion then
a/b = b/c
b^2 = ac
15^2 = a× 40
a = 225/40
= 45/8
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