ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos

SAT Math 4.4 Numbers and Operations 188 Views


Share It!


Description:

SAT Math 4.4 Numbers and Operations

Language:
English Language

Transcript

00:02

And here's your math-y shmoop du jour...

00:04

Tiana's mom promises to pay Tiana to clean out the garage on a weekly basis.

00:09

She decides to pay Tiana $100 the first week,

00:12

and then 75% of the previous week's amount for each of the following weeks.

00:17

However, when the amount drops below $25, Tiana will earn a steady income of $25 per week.

00:24

How much will Tiana earn after 10 weeks?

00:27

Round to the nearest dollar. And here are the potential answers...

00:32

To start, we need to focus on the most important information: Tiana's weekly pay.

00:37

In the first week, she gets paid 100 buckaroos. In the following weeks, she'll get paid

00:42

75% of each previous week's pay.

00:44

When her salary drops below $25, she'll get paid a steady amount of $25.

00:49

The easiest way to solve this problem is to make a chart of how much she makes each week,

00:52

starting with week 1 and ending with week 10.

00:55

Week 1, she makes $100. Week 2, she makes $75, which is 75% of $100.

01:02

This pattern stays the same and by week 6, she's earning $25.

01:06

She will continue to make $25 for the next weeks till she hits 10 weeks.

01:18

Now that you've got a list of her salaries

01:19

over all 10 weeks, just add them up... and we get $430.

01:24

Choice E is the correct answer.

Related Videos

SAT Math 2.1 Geometry and Measurement
2779 Views

SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?

SAT Math 9.4 Algebra and Functions
1300 Views

SAT Math 9.4 Algebra and Functions

SAT Math 9.2 Algebra and Functions
377 Views

SAT Math 9.2 Algebra and Functions

SAT Math: Identifying an Equation for the Average of Two Percentages
23 Views

In 2014, the unemployment rate of one county in California was 7%. In another county, the unemployment rate was 11%. Which of the following express...

SAT Math: Which Equation Represents Profit?
13 Views

Angela is making cookies for a bake sale. She expects each batch of her cookies to sell for $40. It costs her $10 to make one batch of cookies, and...