At present Lili is 23 years old and Mehrin is 15 years old.How many yrars agowas Lili twice as old as Mehrin?
সমাধান
সঠিক উত্তর: Option A
Suppose, x years before, lily’s age was double of mihir’s according to question, (23-x)=2(15-x) or,x=7
