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Seven times a two digit number …

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Seven times a two digit number is equal to four times the number obtained by reverseing the order of its digits . If the difference of the digits is 3, determine the number.

Posted by Mihir Panchal 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Ram Kushwah 6 years, 4 months ago

Let digits are x and x+3

Number with x at 10th place=10x+x+3=11x+3

On reversing the digits number=10(x+3)+x=11x+30

So 7( 11x+3)=4(11x+30)

77x+21=44x+120

33x=120-21=99

x=3

so Numbers are 36 and 63

1Thank You

ANSWER

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CBSE > Class 10 > Mathematics