Question

reji is 6 years older than her sister . after 12 years , the sum of their ages will be 54 years . find their present ages​

Answer 1

Answer:

18 years

Step-by-step explanation:

Let the present age of Rene's younger sister be x

The present age of Rene be x + 6

After 10 years the sum of their ages = 50 years

A/q,

=> [(x + 6) + 10] + [x + 10]  = 50  

=> [(x + 16) + (x + 10)] = 50

=> 2x + 26 = 50

=> 2(x + 13) = 50

=> x + 13 = 50/2

=> x + 13 = 25

=> x = 25 - 13

=> x = 12

The age of Rene's younger sister = x = 12 years

The age of Rene = x + 6 = 18 years

Answer 2

Answer:

the age of reji is 18

Step-by-step explanation:

suppose present age of reji is a and her sister present age is b

then a = b+6 ( by given condition )

a+12+b+12=56 ( by given condition)

a+b=30

a+a-6=30 ( from equation.1 )

2a=36

then a=18

but a is a present age of reji

so present age of reji is 18