Question

Red and gray bricks were used to build a decorative wall.

The number of red bricks/The number of gray bricks was 5/2. There were 175 bricks used in all. How many red bricks were used?
25
125
50
35

Answer 1

Answer: it's actually 125

Explanation:

took the test, 50 is incorrect

Answer 2

lets say
Red bricks = 5x
Gray bricks = 2x

5x + 2x = 175
7x = 175
x = 175/7
x = 25

Red bricks =(5x) = 5 * 25 = 125
Gray bricks =(2x) = 2* 25 = 50