What is 30% of 240?
The answer is 72.
Result Explanation
30% of 240 = 72. If you are subtracting this as a discount, the discounted total is 240 − 72 = 168. If you are allocating, 72 is the allocated amount and 168 is the remainder.
Quick check: compare 240 × 0.30 with (30 ÷ 100) × 240; both should equal 72.
How It Works
Step 1: Write 30% as a decimal: 30 ÷ 100 = 0.3.
Step 2: Multiply by 240: 0.3 × 240 = 72.
Same numbers as a single product: (30 ÷ 100) × 240 = 72 for this page.
Mental add-on: 5% of 240 is 12, so six five-percent notches yield 6 × 12 = 72 without touching 0.3.
Strategy & Insight
Reference marks on 240 read 60 at 25%, 120 at 50%. Seventy-two should sit between them, a bit above the quarter—quick protection against a flipped digit in a spreadsheet.
Exact third: 240 ÷ 3 = 80. Thirty percent at 72 trails that third by 8. If a stakeholder rounds "a third of 240" in speech but the worksheet hard-codes 30%, expect 72 on paper, not 80.
Twelve-friendly structure: 240 = 12 × 20, and 72 = 12 × 6, so you can think in dozens if your inventory already ships that way.
Slide from 225: the base rose by 15, and 0.3 × 15 = 4.5, so the 30% slice grows from 67.5 to 72 when you step the whole from 225 to 240.
Common Mistakes
- Multiplying by 30 directly (30 × 240) instead of 0.3 × 240.
- Offering 168 when the prompt wanted the 30% piece, or answering 72 when they needed the post-30% balance.
- Calling 30% of 240 "one-third"; the third here is 80.
- Applying 30% to a net subtotal while still describing the percentage against the original 240 headline.
Pro Tip
Chain from 10% and 20%: 10% → 24, 20% → 48, add another 24 for the last 10% to land on 72. That staircase matches how some people verify tiered discounts mentally.
Examples
Video render farm: A job queue budgets 240 GPU minutes for a nightly batch, and previews may consume 30% of that budget. Previews use 72 minutes; the remaining 168 minutes stay reserved for final-quality frames on the same cap.
Seminar room: A training space seats 240, and fire code sets aside 30% of seats for accessible positions. Seventy-two seats fall in the accessible pool; one hundred sixty-eight seats are treated as standard layout on that plan.
Throughput test: A service trial allows 240 requests per minute, and throttling documentation says 30% can burst to a partner integration. The integration may pull 72 requests in the measured minute; 168 remain for other clients under that quota.
Apiary harvest: A small yard projects 240 frames for extraction, and early nectar checks earmark 30% for a specialty label. Seventy-two frames feed that label run; one hundred sixty-eight frames stay on the general line for this harvest estimate.
Related Links
FAQ
What is 30% of 240?
30% of 240 is 72.
What is a quick mental route to 30% of 240?
Triple 10% (24 × 3), or multiply 5% (12) by 6, or add 30% of 200 (60) to 30% of 40 (12).
What is 240 after removing 30%?
Subtracting the 30% portion (72) leaves 168.
Is 30% of 240 the same as one-third?
No. One-third of 240 is 80; 30% is 72.