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Ratio (Pri-6)

/ Ratio Greendale Primary School / PSLE (2015)
Name all the figures above that have at least one line of symmetry. Ans: ABD 29 A bag contains straws of three different colours. of the straws are blue. The ratio of the number of red straws to that of green straws is 2:3. hat is the ratio of the number of blue straws to that of green straws? S 12: 20
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September 24, 2018
 
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If 14 of bar is 5 parts, then, Red & Green is 15 parts.Red = 25 × 15 = 6 parts---B : G  ->  5 : 9  (ans)
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Comments 1
Sep 24, 2018 03:50 AM
5 parts is chosen for convenience because of 2:3, can you see why? We can also solve by R = ( 2/5 x 3/4 ) & B = ( 3/5 x 3/4 ).
September 24, 2018
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