brentelytmomo
brentelytmomo
13-09-2016
English
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work out 72 in the ratio 7:5
Respuesta :
JoniBaki
JoniBaki
13-09-2016
Way to work the ratio is find the 1 part from total ratio.
In that case total ratio 7+5 = 12
1 part = 72/12= 6
Therefore, 7parts = 7x6 =42
5 parts = 5 x 6 = 30
Answer- 42:30
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