Plz 1. Giants tickets are original $75 per ticket. This week they are on sale for 20% off. What is the sale price?

2. After the Giants won the Superbowl in 2012, $75 were marked up 18% what was the new selling price?

c + a = 525multiply by -3

3c + 7a = 2775

-3c - 3a = - 1575 (result of multiplying by -3)

3c + 7a = 2775

add

4a = 1200

a = 1200/4

a = 300 <== adult tickets sold

Step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

answer: 4 (:

step-by-step explanation: