Question

seven time a two digit number is equal four times the number with digit reserved. find the number , if the sum of its digit is 3.
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Answer 1

Answer:

required original no. is 36 and reversed digit is 63

Step-by-step explanation:

let numbers be x at ones place and y at tens place so

10y+x is that digit

now reversed digit is 10x+y

according to question

7 (10y+x)=4(10x+y)

x=2y (i)

now

given

x-y=3

from eq. i 2y=x

2y-y=3

y=3

so

x=63

required original no. is 36 and reversed digit is 63

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