1.

यदि `(a)/(b)=(c)/(d)=5`, तो `(3a+4c)/(3b+4d)` किसके बराबर होगा ?A. 5B. 20C. 60D. 15

Answer» Correct Answer - A
`(a)/(b)=(c )/(d)=(5)/(1)`
a=c=5
b=d=1
`therefore (3a+4c)/(3b+4d)=(3xx5+4xx5)/(3xx1+4xx1)`
`=(15+20)/(3+4)=(35)/(7)=5`


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