Find two numbers, if their sum is 49 and their difference is 1/2

Question

Find two numbers, if their sum is 49 and their difference is 1/2

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Amaya 3 weeks 2021-09-24T20:37:56+00:00 1 Answer 0

Answers ( )

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    2021-09-24T20:39:55+00:00

    Let the two numbers be x and y respectively

    CaseI
    x+y=49
    or,x=49-y

    Case II
    x-y=1/2
    or,49-y-y=1/2(from case I)
    or,49-2y=1/2
    or,49-1/2=2y
    or,(49*2-1)/2=2y
    or,97/2=2y
    or,48.5=2y
    or,48.5/2=y
    Y=24.25

    Now,

    X=49-y
    or,x=49-24.25
    X=24.75

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45:7+7-4:2-5:5*4+35:2 =? ( )