Ratio and Fractions

Question

The price of automobile engine oil recently went from 𝑅𝑀10.80 to 𝑅𝑀13.50 per case of 12 quarts. Find the ratio in fraction of the increase in price to the original price.

Answer 1

(new - old)/ old

(13.50-10.80)/10.80 =

2.7/10.8 =

2.7/10.8 * 1 = <--- multiplies by 10/10 to clear the decimals

2.7/10.8 * 10/10 =

2.7*10/ 10.8*10 =

27/108 =

1/4