Question

e) 700
c) 345
2. The sum of digits of a two-digit number is 15. The original number is reversed. The reversed number is
greater than original number by 9. Find the original number.
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Answer 1

Answer:

87

Step-by-step explanation:

the the digit = x , y

x+y=15

10x+y = 9 + 10y+ x

9x-9y =9

x-y = 1

x+y = 15

2x=16

x= 8

x+y = 15

y = 15-8

y = 7

number = 87