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SAT Math: Find an Equation to Solve for Money Spent 7 Views


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Description:

Jacob typically purchases dress shirts for $35 each at his favorite store. He visits the shop on a day when every dress shirt is discounted by 10%. He also sees that a new tie will cost him only $12 on this particular day. Which of the following represents the amount of money Jacob would spend if he purchases both a new tie and d dress shirts? (Do not include sales tax in your equation.)


Transcript

00:00

Yeah Whoa All right Masks members more coming at you

00:05

Here we go Yakup That's how they pronounce that in

00:08

Sweden where he's from typically perches dress shirts that looked

00:12

like that for thirty five bucks each at his favorite

00:15

store he visits the shop on a day when every

00:17

Drescher discounted by ten percent He also sees that a

00:20

new tie will cost him only twelve bucks You could

00:22

try to light it on fire It won't even light

00:24

on this particular day It's twelve bucks Yeah which of

00:26

the following represents the amount of money Yacoub would spend

00:29

if he perches both a new tie and D dress

00:33

shirts and forget about sales Okay Well Yacoub's quite a

00:38

lucky man to enter the store in a discount day

00:40

We love doing that We'd say he is getting ready

00:43

to be quite the fancy pants but it appears he's

00:45

looking for shirts not pants Well to find the correct

00:48

equation first consider the meaning of a ten percent discount

00:51

He'll pay ten percent less than he would normally pay

00:54

Buying an individual shirt Well this means we can subtract

00:58

ten percent from whatever one hundred percent of the price

01:00

of the shirt is to find that he'll be paying

01:02

ninety percent of that original price Right so it's a

01:05

hundred bucks you'd be paying ninety We know the original

01:07

Price D is thirty five Well the price per shirt

01:10

then can be represented as ninety percent of thirty five

01:13

or point nine times thirty five Well defined the total

01:17

that Yacoub will spend on Drescher's prior to sales tax

01:20

We can multiply the price pressured by D the variable

01:23

representing the number of shirts he'll buy Got it It's

01:26

a point nine times three five D But wait a

01:29

minute Yacoub is not first eight ready yet He's gotta

01:32

finish off that look with a tie We know he

01:34

will buy one tie for twelve bucks who Just add

01:37

that twelve to the total amount that he'll spend on

01:39

Drescher's and you get that equation right there Point nine

01:42

three five People s twelve Yacoub's getting a discount on

01:44

a ten percent price increase Get rid of a discounts

01:47

ten percent not a measly ten cents Get rid of

01:49

C and there's also nothing in the problem about a

01:51

package deals so Yacoub won't receive a ten percent off

01:54

his tie either So that's it The answer is B

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