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What is the correct way of doing this ques.?

Asked by Pankaj 22nd June 2016, 3:29 PM
Answered by Expert
Answer:
begin mathsize 12px style It space is space better space to space solve space this space question space step space wise. space The space number space is space given space to space be space straight x.
The space number space is space divided space by space 15 space and space then space by space 16 rightwards double arrow fraction numerator begin display style straight x over 15 end style over denominator 16 end fraction equals fraction numerator straight x over denominator 15 cross times 16 end fraction
Then space multiplied space by space 30 rightwards double arrow fraction numerator straight x over denominator 15 cross times 16 end fraction cross times 30 equals straight x over 8
Take space away space the space number space first space thought space of space and space straight I space get space minus 7.
So space the space equation space is space straight x over 8 minus straight x equals negative 7
On space solving space we space get space fraction numerator negative 7 straight x over denominator 8 end fraction equals negative 7 rightwards double arrow straight x equals 8.
So comma space the space number space thought space of space was space 8. end style
Answered by Expert 22nd June 2016, 4:05 PM
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