CASAS Math Goals Test Prep: Level A/B ACTUAL
EXAM QUESTIONS WITH COMPLETE SOLUTION
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This is a Proportion In a mixture of concrete, there are 3 parts of
Word Problem. gravel to 1 part of cement mix. If the mixture has
You need to create two 12 parts of cement mix, how many parts of gravel
ratios and use the would be required ?
'butterfly wings' to
cross-multiply.
(Remember Order is
important in ratios)
1. Write 2 quantities as a
ratio in English- gravel:
cement mix
2. Now build 1st math
ratio- 3 parts gravel : 1
part cement mix
3. Next, build 2nd math
ratio- ? parts gravel : 12
parts cement mix
4. Cross-multiplying → ?
= 3 × 12
Answer = 36 parts
gravel would be required
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