ExamPlay Light Logo
로그인

Mathematics for IGCSE & O level - Ratio And Proportion (Section 1 - No. 23)

The ratio of John's age to Mary's age is 2:3. If John is 10 years old, how old is Mary?
10
15
20
25

설명

John:Mary=2:3, 10=2*5 so Mary is 3*5 =15

댓글 (0)

광고