Question

Renu is 3 years older than Anu .five years ago renus age was 4 times anus age find their present age

Answer 1

Answer:

X=10.6 ,Y=7.6

Step-by-step explanation:

let Renu be x

let anu be y

according to 1st condition

x-y=3 --> 1

according to 2nd condition

(x-5) = 4(y-5)

x-5 = 4y-20

x-4y = -20 ---> eqn 2

by elimination method

eqn 1 --> x-y=3

eqn 2 --> x-4y= -20

(-) --(+)----(+)------

+3y = +23

y = 23/3

y= 7.6

but substituting y=7.6 in equation 1

x-7.6=3

x = 3+7.6

x= 10.6