I.Q. test 38
By jinuxnet
@jinuxnet (675)
Philippines
February 28, 2007 1:08am CST
38. Emily is four years old. Her big sister Amy is three times as old as Emily. How old will Amy be when she is twice as old as Emily?
a. 14
b. 16
c. 18
d. 20
e. 22
f. I don't know
and why?
6 responses
@josephperera (2906)
• Sri Lanka
2 Mar 07
Question is tricky though it seems to be simple. Emily is 4 years old. Her sister is 12 years old. After some time Emily will be 4+Y and her sister will be 12+Y.
IF 2x(4+Y) = 12+Y
8 + 2Y = 12 + Y
Y = 4
It is after 4 years that this happens. So after 4 years Amy will be 16 years old.
