Question

6. In a jar of 650 marbles, 20% of the marbles are red.
How many marbles are not red

Answer 1

520

Explanation:

20% are red which means 130 are red

650-130= 520

or you could look at it this way

if 20% is red that means 80% is not red

80% of 650 is 520

Answer 2

Explanation:

20% of 650

1/5 of 650

130=red

520= not red