cteid22
cteid22
24-01-2016
Mathematics
contestada
50% of Number is 250 what is 80% of that number
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Billymkhoi
Billymkhoi
25-01-2016
We have an equation: 250/?= 50/100
Cross multiply:
50*?= 250*100
⇒ ?= 250*100/50= 500
The number is 500~
We have another equation: ?/500= 80/100
Cross multiply:
100*?= 80*500
⇒?= 80*500/100= 400
80% of 500 is 400~
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