Question

Last year, the ratio of the ages of Mel and her friend is 3:4. Next year, the ratio will be 4:5. Form two simultaneous equations using the information above, and solve them by using the elimination method. Hence find their ages now.​

Answer 1

Answer:

Above is the answer, coupled with detailed step-by-step explanations. Thank you!

Answer 2

Use the given functions to set up and simplify 4 - 4 : 5.

3 =

4 - 4 : 5 = 0 : 5