Double Block Algebra (Page 3 of 3) in pdf

Double Block Algebra Page 3

Directions: Identify the formula and solve using that formula. Round 2 decimal places.

14. How many pounds of dark chocolate worth $1.20 a pound must be mixed with 10

pounds of white chocolate worth 90 cents a pound to produce a mixture worth

$1.00 a pound?

a. What type of problem is this?

b. Parts of the formula/chart

15. Jamie needs to earn $500 more to buy a used car. She puts $2000 into an

account that earns 2.5% interest. How long will she need to leave her money in

the account to earn $500 in interest?

a. What type of problem is this?

b. Parts of the formula/chart

16. Bob's dentist determined the number of cavities developed in his patient's mouth

each year is inversely proportional to the total number of minutes spent brushing

during each session. If Bob developed four cavities during the year he spent only

30 seconds brushing his teeth each time, how many annual cavities will Bob

develop if he increases his brushing time to two minutes per session?

a. What type of problem is this?

b. Parts of the formula/chart

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Double Block Algebra Page 3