Question

A person says my age is 140 percent of what it was 10 years back. What is his age

Answer 1

Answer:

this means that 40 %of his ........1

increased when he grows 10 yrs

therefore 1 yr = 4%

then 100%= 4%×25

=1yr×25=25yrs

therefore 140% is equal to 25yrs+10yrs

.......1

=35yrs

therefore his age is 35yrs

Answer 2

35

Step-by-step explanation:

let the present age is X

10 years ago his age is X-10

the person's present age is

140 % of (X-10)

140/100 × (X-10) = X

7/5 × (X-10) = X

X-10 = X ×(5/7)

X-10 = 5X/7

X-(5X/7) = 10

(7X-5X)/7 = 10

2X/7 = 10

2X = 70

X = 70/2

X = 35

present age is 35