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Q.

The ratio of Marks obtained for A and B is 3 : 4. If A get 30 marks less than B. Then the marks obtained by B are _______

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a

150

b

120

c

60

d

90

answer is C.

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Detailed Solution

A:B=3:4A  get  30  marks  less  than  B  means  difference  in  ratio  is  1  thenu'4x3x=1x(or)x=30A=3xB=4x  B=4×30=120

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