Question

*Bharti is older than Arti by 3 years. What will be the age of Arti after 3 years if sum of their ages is 12.*

1️⃣ 4.5 years
2️⃣ 8 years
3️⃣ 7.5 years
4️⃣ 9 years​

Answer 1

Answer:

7.5

Step-by-step explanation:

LET AGE OF BHARATI=X

LET THE AGE OF ARTI BE=Y

GIVEN THAT,

X-Y=3....(1)

X+Y=12.....(2)

(1)-(2)

2Y=9

Y=9/2

AFTER 3 YEARS Y=9/2+3

=15/2

=7.5 years old

Answer 2

Answer:

7.5 years

Step-by-step explanation:

Let age of Bharti is 'x' years and for Arti its 'y' years.

Given that Bharti is older than Arti by 3 years, which implies that

$x-y=3 .......(1)$

Also, sum of there age is 12 years

$x+y =12 ........(2)$

Adding equation (1) and (2) and then putting value of x in any of these equation provides us value of x and y, which is $x=7.5\,years \,\,\, and \,\, y=4.5\, years.$

Age of Arti after 3 years will be 4.5 +3 = 7.5 years