Question

kim is 10 years older than laura. Laura is twice as old as melissa. If Melissa will be 10 years old in 5 years, how old is Kim now?
a.15 years old
b.20 yr old
c.25 yr old
d.30 yr old

Answer 1

NOW:
Melissa --- x
Laura --- 2x
Kim ---- 2x+10

x+5 = 10
x = 5

So Kim is 2x+10 = 10+10 = 20

Answer 2

Melissa: 10-5 = 5yrs. old now.
Laura: 2*5 = 10 yrs old now.
Kim: 10+1o = = 20 yrs old now.