📚 Real-World Applications
Percentages are everywhere in daily life. Let's practice with realistic scenarios!
🛒 Shopping: Double Discounts
A $100 item has 20% off, then an additional 15% off the sale price.
1
First discount: $100 × 0.80 = $80
2
Second discount: $80 × 0.85 = $68
Total savings: $32 (32%), not 35%!
💳 Calculating Tips
Quick method for 15% tip on a $48 bill:
1
10% = $4.80
2
5% = half of 10% = $2.40
3
15% = $4.80 + $2.40 = $7.20
🎯 Inténtalo tú mismo
Inténtalo tú mismo
A $250 TV has a 30% discount. You have an extra 10% off coupon. What's the final price?
First discount: $250 × 0.70 = $175. Then apply 10% off: $175 × 0.90
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