X A number consists of two digits of which ten’s digit exceeds the

1.	X A number consists of two digits of which ten’s digit exceeds the unit digit by 7. The numberitself is equal to 10 times the sum of its digits.Find the number.
Answer» ong>Step-by-step explanation: LET the digit in the tens place be x and units place be y. FINAL number = 10X + y x = y + 7 x - y = 7 ----- (1) 10x + y = 10(x + y) 10x + y = 10x + 10y 10x - 10x = 10y - y 9y = 0 y=0 ------(2) Substituting (2) in (1) x - 0 = 7 x = 7 Final number = 10x + y = 10(7) + 0 = 70

X A number consists of two digits of which ten’s digit exceeds the unit digit by 7. The numberitself is equal to 10 times the sum of its digits.Find the number.

Answer»

ong>Step-by-step explanation:

LET the digit in the tens place be x and units place be y.

FINAL number = 10X + y

x = y + 7

x - y = 7 ----- (1)

10x + y = 10(x + y)

10x + y = 10x + 10y

10x - 10x = 10y - y

9y = 0

y=0 ------(2)

Substituting (2) in (1)

x - 0 = 7

x = 7

Final number = 10x + y = 10(7) + 0 = 70

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X A number consists of two digits of which ten’s digit exceeds the unit digit by 7. The numberitself is equal to 10 times the sum of its digits.Find the number.​

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X A number consists of two digits of which ten’s digit exceeds the unit digit by 7. The numberitself is equal to 10 times the sum of its digits.Find the number.