Mathematics
DanielaBux901
2

University representative: This week, the University is offering an additional 20% discount on any course, on top of the 30% discount you have already received. Potential student: is that 20% off the original price or 20% off the reduced price? University representative: what's the difference? Potential student: I expect the difference is over $100. If the regular price of a course is $2000, is the student’s expectation correct? Justify your answer with mathematics.

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(2) Answers
CarlCranson

Yes, the student is absolutely correct 20% off of $2000 would leave $1600 of the bill an additional 30% off of the reduced price would leave $1120 however, 20% off plus and additional 30% off the origional price (50%) would leave $1000 as the total bill therefore the student is correct is saying there is about a $100 difference

2162552177

Yes: 20% off reduced price: 2000x .3 Step two: 2000- 600 =1400 Step 3: 1400x .2 Step 4: 1400- 280 =$1120... 30% and 20% off: Well 30+20 is 50 so half of $2000 is $1000... or you could multiply .3 by 2000 and then .2 by 2000 add those together and subtract from 2000 :)

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