Last Q that I've been stuck on, so please HELP!!!
The length of a rectangular sheet of metal decreases by 34.5cm. Its width decreases proportionally--that is, by the same percentage. If the sheet's original width was half the original length, and the new smaller area of the sheet is 1.2 sq m, (a) what was the sheet's original width, and (b) by what percentage did the area of the sheet change? I tried assigning variables but that didn't really work out... I'm sort of stuck on how to represent that proportional change algebraically...

Question

Last Q that I've been stuck on, so please HELP!!!
The length of a rectangular sheet of metal decreases by 34.5cm. Its width decreases proportionally--that is, by the same percentage. If the sheet's original width was half the original length, and the new smaller area of the sheet is 1.2 sq m, (a) what was the sheet's original width, and (b) by what percentage did the area of the sheet change? I tried assigning variables but that didn't really work out... I'm sort of stuck on how to represent that proportional change algebraically...

anonymous · Answer

do you mind me asking what class this is for?

anonymous · Answer

It's a on a  Math Review Sheet

anonymous · Answer

(on an algebraic math review sheet)

anonymous · Answer

Do you think you can help @Qwesda?

anonymous · Answer

i feel like i can but your right in that this is difficult

anonymous · Answer

Here's a formula to work out the smaller rectangle and solve some variables to answer your questions

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