Richard will increase the amount of time he studies each night from a period of 55 minutes to a period of 75 minutes by what percentage will Richard increase the amount of time he studies each night it is question 3 btw

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: the actual answer is a. good bank will have the least amount in fees per year.

if i knew id you bro,, my bad

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