Application Problems

Solve application problems by adding and subtracting fractions
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Questions #: 5
Time: 10 minutes
Pass Score: 80.0%
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Television Viewing Habits

Students on a college campus were asked to estimate to the nearest hour how much television they watched each day. The results are given in the circle graph below (also called a pie chart). For example, the chart tells us that \(\frac14\) of those responding watched 1 hour per day.  What fraction of the student body watches from 0 to 2 hours daily?

tv_views.gif

POINTS (1)

Correct Answer

Explanation

Budgets

"Putting together a budget is crucial if you don’t want to spend your way into serious problems. You’re also developing a habit that can serve you well throughout your life.”

Liz Pulliam Weston, MSN Money

The circle graph below shows a suggested budget for new college graduates as recommended by Springboard, a non-profit consumer credit counselling service. What fraction of net take-home pay should be spent on housing?

budget_fraction.gif

POINTS (1)

Correct Answer

Explanation

Botany

To determine the effects of smog on tree development, a scientist cut down a pine tree and measured the width of the growth rings for the last two years.

The measure of the first year was \(\frac{1}{16}\) in and the measure of the second year on top of the first year was \(\frac{5}{32}\) in

  1. What was the growth over this two-year period?
  2. What is the difference in the widths of the two rings?

Use "/" to write the fraction in your answer e.g. 1/2 or 3/4

POINTS (1)

Correct Answer

Explanation

GARAGE DOOR OPENERS

What is the difference in strength between \(\frac13\)-hp and a \(\frac12\)-hp garage door opener?

POINTS (1)

Correct Answer

Explanation

DELIVERY TRUCKS

A truck can safely carry a one-ton load. Should it be used to deliver one-half ton of sand, one-third ton of gravel, and one-fifth ton of cement in one trip to a job site?

POINTS (1)

Correct Answer

Explanation

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Avg score:
0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC

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