Question

riddhima is five year younger than aarav..four year later aarav will be twice as old as riddhima.what will be thier present age...kindly explain through expression..

Answer 1

let the age arrav be a
and age of riddhima be
a/q
a-b=5. eg(1)
a+4=2(b+4)
=>a-2b=4. eq(2)
eq(1)-eq(2)
=>2b-a+a-b=1
=>b=1
putting a=1 in eq(1)
a-1=5
a=6
therefore,
riddhima's age=1 years
aarav's age=6 years