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A two digit number is such …

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A two digit number is such that the product of its digit is 18 .When 63 is subtracted from the number , the digit interchange their places . Find the number

Posted by Aaditya Mishra 3 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Sadaf Khan 3 years, 3 months ago

×y=18-eq(i) 10×+y-63=10y+× On solving 9×-9y=63(-63 changed into +63 on shifting it towards right) On dividing the whole eqn by 9 ×-y=7-eq(ii) ×=7+y On putting the value of eq(ii) in eq(i) We get (7+y)y=18 Y2+7y-18 Y2+9x-2x-18 Y(y+9)-2(y+9) Y=-9 Or Y=2 ×y=18 2x=18( 2 is the value of y) ×=18÷2=9 Now you check your answer by putting both x and y value in any of the on one eqn Hope this will help you.....!

3Thank You

Rahul Choudhary 3 years, 3 months ago

Superb

1Thank You

ANSWER

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CBSE > Class 10 > Mathematics