Ratio

kittong

New member
Joined
May 19, 2019
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7
three ratios of time spent per day by the teachers on internet was 1:2:3. The ratios of the days they used the internet was 2:4:5..Find the ration of their total usage of the internet
 

HallsofIvy

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Jan 27, 2012
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5,042
1*2:2*4:3*5= 1:8:15. It's that easy!

To see why that works, look at specific times and days. If the first teacher spent one hour on the internet then the second teacher spent 2 hours and the third teacher spent 3 hours. If the first teacher spent 2 day on the internet then the second teacher spent 4 days and the third teacher spent 5 hours. The first teacher spent 1 hour per day for 2 days so 2 hours on the internet. The second teacher spent 2 hours per day for 4 hours so 8 hours on the internet. The third teacher spent 3 hours a day on the internet for 5 days so 15 days on the internet.
 

kittong

New member
Joined
May 19, 2019
Messages
7
Got it..Thank you very much for time/assistance..
thanks again
 
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