Question

6. In a box, the ratio of red marbles to blue marbles is 7:4. Which of the
following could be the total number of marbles in the box?
(A) 18 (B) 19 (C) 21 (D) 22

Answer 1

Answer:

D) 22

Step-by-step explanation:

Ratio of red marbles to blue marbles = 7:4

Let the number of red marbles be 7x

the number of blue marbles be 4x

Total number of marbles = 7x + 4x

Total number of marbles = 11x

x = Total number of marbles/11

In the given options, only 22 is perfectly divisible by 11...also x can't be in decimal as it is the number of marbles

So, Answer = 22

Hope it helps you:)