Jasmin Lim's answer to Inez's Primary 6 Maths Ratio Singapore question.
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both girls will +12 to their age. and ratio will not change so take 57 (their total age in the future) minus both 12 years (24yrs) and their total age NOW is 33 then use this total to solve for 1unit and 5unit and then add 20 to the 5unit (what is her age 20 years from NOW)
Date Posted:
4 years ago
How do u get 24
12+12
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