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22 Jan 2026, 23:12
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Look at the exchange rates given in the problem!
When you see rates like $1.20 per euro or 0.80 euro per dollar, these are "clean" numbers that the GMAT deliberately chose. This is your signal that the answer choices will likely divide evenly.
Quick Check Method:
1. Look at the final rate: $1.20 per euro
2. Ask yourself: Which answer choices divide evenly by 1.20?
- $60 ÷ 1.20 = 50 euros ✓
- $80 ÷ 1.20 = 66.666... euros ✗
- $100 ÷ 1.20 = 83.333... euros ✗
- $120 ÷ 1.20 = 100 euros ✓
- $140 ÷ 1.20 = 116.666... euros ✗
3.Therefore, only A ($60) and D ($120) are realistic candidates!
When to use this strategy:
✓ When rates are "nice" decimals like 0.80, 1.20, 1.25, 0.75
✓ When the problem involves currency exchange or unit conversion
✓ When answer choices are spread apart (not consecutive numbers)
When to be cautious:
✗ When rates involve ugly fractions like 7/13 or 11/17
✗ When the problem has multiple complex steps where rounding could accumulate
Important: The GMAT almost always uses "clean" numbers in currency exchange problems. If you see a rate like $1.20, trust that the answer will divide evenly - the test makers aren't trying to trick you with hidden decimals!
When you see rates like $1.20 per euro or 0.80 euro per dollar, these are "clean" numbers that the GMAT deliberately chose. This is your signal that the answer choices will likely divide evenly.
Quick Check Method:
1. Look at the final rate: $1.20 per euro
2. Ask yourself: Which answer choices divide evenly by 1.20?
- $60 ÷ 1.20 = 50 euros ✓
- $80 ÷ 1.20 = 66.666... euros ✗
- $100 ÷ 1.20 = 83.333... euros ✗
- $120 ÷ 1.20 = 100 euros ✓
- $140 ÷ 1.20 = 116.666... euros ✗
3.Therefore, only A ($60) and D ($120) are realistic candidates!
When to use this strategy:
✓ When rates are "nice" decimals like 0.80, 1.20, 1.25, 0.75
✓ When the problem involves currency exchange or unit conversion
✓ When answer choices are spread apart (not consecutive numbers)
When to be cautious:
✗ When rates involve ugly fractions like 7/13 or 11/17
✗ When the problem has multiple complex steps where rounding could accumulate
Important: The GMAT almost always uses "clean" numbers in currency exchange problems. If you see a rate like $1.20, trust that the answer will divide evenly - the test makers aren't trying to trick you with hidden decimals!
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