Friday, 10 April 2015

RATIOS 3




Simplify 21/10: 82/5

solution

= 21/10 ÷ 82/5

= 21  ÷  42
    10      5

= 21  x   5
   10      42

= 121  x   51        [cancelling by 5 on 5 and 10; again cancelling by 21 on 21 and 42]
  210      422

= 1  x   1
   2       2

= 1 
   4

= 1 : 3

Hence    21/10: 82/5 = 1 : 3  


TRY THIS........

Simplify 164/11 : 19/11

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