ACT Math Practice Problems

GDP of a country grows by 10% from 2007 to 2008 (with 2007 GDP as the base for calculating percentages) and 25% from 2008 to 2009 (with 2008 GDP as the base for calculating percentages). What is the GDP growth from 2007 to 2009 with the 2007 GDP taken as the base?

(A) 35%

(B) 37.5%

(C) 40%

(D) 45%

(E) 50%

12 liters of water a poured into an aquarium of dimensions 50cm length , 30cm breadth, and 40 cm height. How high (in cm) will the water rise? (1 litre = 1000cm³)

(A) 6

(B) 8

(C) 10

(D) 20

(E) 40

Line l contains the points (3,1) and (4,4). If line m is a different line, parallel to line l in the same coordinate plane, which of the following could be the equation of line m?

(A) y=3x-8

(B) y=1/3x – 3

(C) y= -3x – 8

(D) y=3x+1

(E) y= -8x

2^30 + 2^30 + 2^30 + 2^30 =

(A) 8^120

(B) 8^30

(C) 2^32

(D) 2^30

(E) 2^26