Quantcast XP Math - Forums - View Single Post - Word Problem, Lvl 5, Q#2
View Single Post
Old 07-04-2013   #9
james_smith
 
Join Date: Jul 2013
Posts: 1
Default

The best answer would be:

given,

James- 11 years
Julio- 36 years

After some years Julio will be twice the age of James.

Julio = 2 * James.
consider year wise.
first,

Left hand side should be always >= to Right Hand Side

So,

consider the age after 10 years
add 10 on both sides:
Julio + 10 = 2 * (James + 10)
36 + 10= 2 * (11 + 10)
46 = 42
46 = 42 ( which is not equal to each other)
by this u can make out another 4 should be added on both side to make it LHS = RHS

36 + 14 = 2 * (11+14)

So after 14 years L.H.S = R.H.S

after 14 years the age of Julio will be twice the age of James.
james_smith is offline   Reply With Quote