No idea. I can't quite even figure just what the question is.
It appears you are working on multiplying fractions.
1st model: 7/20
2nd model: (7/20)(6/7) = (7*6)/(7*20) = 3/10
3rd model: (7/20)(27/35) = (7*27)/(20*7*5) = 27/100
4th model: (7/20)(4/5) = (7*4)/(20*5) = 7/25
The depth of the first model of a mobile phone measure 7/20 of an inch. The second model is 6/7 Was the depth of the first model. The third model measured 27/35 of the size of the first model. The fourth model was 4/5 the size of the first model. What is the size of each model of the phone?
I have no clue how to do this please help
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