A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc diameter.

Answer 1

We have to be careful because the question is to find the ratio of the mini disc to the disc.

The diameter of the mini disc is 14 and the diameter of the disc is 21.

We create a fraction of 14/21.

Then reduce by dividing both the numerator and denominator by 7.

new fraction is 2/3.

The ratio is 2/3.

another way to write this ratio is 2:3.