The ACT has many short word problems. Translate the sentence, then calculate. Knowing the setups makes them quick.
Work through it
A shirt marked $40 is 15% off, with 5% tax. Total?
Discount.
Tax.
A car goes 150 miles in 2.5 hours. Then at that rate, how far in 4 hours?
Rate. mph
Multiply. miles
Red:blue is , with 21 marbles. How many blue?
Each part.
Blue.
Watch out for this
Adding percent changes: 15% off and 5% tax means 10% off.
They're on different amounts. Multiply the factors.
The short version
Part equals percent times whole. Rate times time equals distance. Set up proportions with matching positions.
Part equals percent times whole. Rate times time equals distance. Set up proportions with matching positions.
Your turn
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