Question

8. The tens digit of a number is 1 more than its ones place. If the sum of the number and the
number obtained by interchanging its digits is 33, find the number
9. The numerator of a fraction is 3 less than its denominator. When both the numerator and the
denominator are increased by 1 the fraction becomes . Find the fraction.
10. The present ages of Gagan and Albert are in the ratio 2:3. Four years from now their ages will
be in the ratio 5:7, then find their present ages.​

Answer 1

Answer:

0

Step-by-step explanation:

Answer 2

Answer:

1) Let the tens place digit be x.

The units place digit is 3.

∴ Number = (10x  + 3)              ... (1)

 

Given:

7( x + 3) = (10 x + 3)

7 x + 21 = 10 x + 3

∴ 10 x - 7x = 21 - 3

⇒ 3 x  = 18

or x = 6

Using x = 6 in equation (1):

The number is 63.

2)Answer:

4/7

Step-by-step explanation:

let denominator be x... acc. to the question numerator will b x-3

acc. to the question:

(x-2)/(x+3) = 1/2

2x - 4 = x + 3

x = 7

denominator,x= 7

numerator, x-3= 4

original fraction= 4/7