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If a/b = 19/3, b/c = 15/26, c/d = 13/19, e/f = 7/117 and d/e = 19/25 then what is the value of ( abc/def )*5?

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If a/b = 19/3, b/c = 15/26, c/d = 13/19, e/f = 7/117 and d/e = 19/25 then what is the value of ( abc/def )*5?
posted Aug 1, 2018 by Divya Bharti

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1 Answer

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7/60


a/b = 19/3 --->(1)
b/c = 15/26 --->(2)
c/d = 13/19 --->(3)
e/f = 7/117 --->(4)
d/e = 19/25 --->(5)
(abc/def)*5=x


(1)* (2)* (3)=a/d---> (6)
(2)* (3)* (5)=b/e---> (7)
(3)* (4)* (5)=c/f---> (8)
(6)* (7)* (8)=abc/def ==> x=5*19/3*15/26*15/26*13/19*13/19*13/19*7/117*19/25*19/25=7/60
x=7/60

answer Aug 1, 2018 by Hanifa Mammadov
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