A man has three sticks. If the length of the first stick is 2.4 m,
that of the second is 2.1 m, and that of the third is 1.5 m,
find the ratio between their lengths, respectively.
Write the lengths as a ratio with three terms. First multiply each term by 10 to remove the decimal point and make whole numbers. Then divide each term by the same number to find the ratio in its simplest form.