Question

There are 9 marbles in a cup and 3 marbles in a box. John removes 3 marbles from the cup. How many marbles should he remove from the box so that the ratio of the number of marbles in the cup to the number of marbles in the box remains the same? ​

Answer 1

Answer: 1 marble

Step-by-step explanation:

Step 1...

To find the answer, we have to find the ratio of marbles at the start or

9 to 3

Step 2...

Since John removed 3 marbles from the cup, there are only

9 - 3 = 6 marbles

Step 3...

Simplifying our ratio from step 1, we get 3 to 1.

If we give x as the number of marbles after John removes a number of marbles from the box, we get

3/1=6/x

Solving the equation, we get that x=2

So, John has to remove 3 - 2 = 1 marble from the box