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Fractions (Pri-5)

/ Fractions Bukit Panjang Primary School / Homework (2018)
35 of Adam's present age is 14 of Ben's age 2 years ago.Their total age in 5 years' time is 131.What is Ben's present age?
Na

August 6, 2018
 
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Answer 2 Comments 1
Aug 6, 2018 08:00 AM
GUIDE: draw a bar model showing both A & B's age for the 2 cases to solve for U. Then solve for B's current age.

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5 U + 5 + 12 U + 2 + 5 = 13117 U = 119U = 7---Ben's present age = 12 U + 2                             = 12 ( 7 ) + 2                            = 86
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Comments 1
Aug 6, 2018 07:58 AM
Bar model is the way to go :)
August 6, 2018
If A & Bare their current ages,35 A = 14 ( B - 2 )12 A = 5 B - 10---A + 5 + B + 5 = 131A = 121 - B---So -> 12 ( 121 - B ) = 5 B - 101452 - 12 B = 5 B -1017 B = 1462B = 86
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Comments 1
Aug 6, 2018 07:27 AM
This working is by some basic algebra, let's see if there's a working by bar model.
August 6, 2018
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