Question

In a two digit number, the digit at tens place is 7 and the sum of the digits is 8 times the digit at unit place.
Then the number is..........
a.71
b.61
c.17
d.16​

Answer 1

Answer:

71

Step-by-step explanation:

because 7 + x = 8 times x i.e 8x

hence. 7=7x

therfore x = 1

the number being

71

Answer 2

Answer:

71

Step-by-step explanation:

Given,7 is in the tens place..

Let's solve it using trial and error method

first we take 1

We get, 7+1=8

We can see it is fulfilling the condition that the sum of the digits is 8 times the digit in the ones place

(8*1=8)

Hence, The number is 71..