Flashcards in Gre Math Deck (3)

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0

Q

Movie theater charges £6 per ticket and costs £1,750 per movie. How many people must see a movie so that the theater makes £1 profit per person

A

C=6c–1750

-5c=-1750

C=350

1

Q

Pens cost 70 cents each. Pencils cost 40 cents each. Jakob spent £5.20. 10 pens and pencils, how many pencils did he buy?

A

Number of pencils = x Number of pens = x-10 70(10-x) + 40x = 520 700-70x+40x=520 x=6

2

Q

Aspect ratio is width:height

16:9 and perimeter of 100. How many inches wide is the monitor?

A

Width = 16m Height= 8m Perimeter of rectangle = 2(l+w) 100=2(16m+8m) 100=50m M=2 16m= 32