Bell Ringer 14
Solve each equation for the variable indicated.
a. x = b ­ c/d for c
b. (df + 10)/g = g for f
c. 6q­ 18 = qr + t for q
Due Wednesday 2­8:
Pg. 128 ­ 131 (8­60, every 4th, not 36 and 40)
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Today's objectives:
­ Solve mixture problems.
­ Solve uniform motion problems.
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Vocabulary terms:
Mixture problems ­ Problems in which two or more parts are combined into a whole.
uniform motion problem/rate problems ­ problems where an object moves at a certain speed or rate.
Weighted Average ­ found by multiplying each data value by its weight and then finding the mean of the new data set.
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Solving mixture problems
A tea company sells blended tea for $25 per pound. To make blackberry tea, dried blackberries that cost $10.50 per pound are blended with black tea that costs $35 per pound. How many pounds of black tea should be added to 5 pounds of dried blackberries to make blackberry tea?
Number of units (lb) Price Per Unit ($)
Total Price (price x Unit)
Dried Blackberries
Black Tea
Blackberry tea
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How many pounds of premium coffee beans should be mixed with 2 pounds of Supreme coffee to make the Blend Coffee? Given that Premium costs $9.50 per pound, Supreme costs $11.75 per pound, and the blend costs $10.00 per pound.
Number of Units (pounds)
Price Per unit
Total Price
Premium
Supreme
Blend
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It took Travis and Tony 40 minutes to skate 5 miles. The return trip took them 30 minutes. What was their average speed for the trip?
You jogged 2.5 miles in 16 minutes and then walked 1 mile in 10 minutes. What was your average speed?
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