Question

Express the following ratio in the simplest form:
324 : 144

Answer 1

324:144 = `324/144=(324 ​÷ 36)/(144 ​÷ 36)=9/4`  (As the H.C.F. of 324 and 144 is 36.)

Since the H.C.F. of 9 and 4 is 1, the simplest form of 324:144 is 9:4.