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Question

The L.C.M of two numbers is 12 times their H.C.F. The sum of the H.C.F. and L.C.M. is 403. If one of the numbers is 93, then what is the other number?

A
124
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B
128
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C
134
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D
138
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Solution

The correct option is A 124
L.C.M=12×H.C.F and
H.C.F+L.C.M=403
H.C.F+12H.C.F=403
13H.C.F=403
H.C.F=40313=31
L.C.M.=12×31=372
Given number =93
Other number =LCM×HCFGiven number
=372×3193=124

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