What Is 50% of 30?

50% of 30 is 15, the same as 1/2 of 30.

Result

Answer

15

50% of 30 is 15.

  • 30 + 50%: 45
  • 30 − 50%: 15
1550% of 30

Step-by-step solution

The problem

{50}\% \text{ of } {30}

  1. Change 50% to a decimal. Divide by 100.

    50\% = 50 \div 100 = 0.5
    = \textcolor{#0b5c56}{0.5} \times 30

  2. Multiply. Leave out the decimal points and multiply, then put the point back. Count the decimal places: 0.5 has 1, so the answer has 1.

    \begin{aligned} 5 \times 30 &= 150 \\[10pt] 150 \div 10 &= 15 \end{aligned}
    = \textcolor{#0b5c56}{15}

All the working together

\begin{aligned} &{50}\% \text{ of } {30} \\[8pt] &= 0.5 \times 30 && \textcolor{#5b6660}{\textsf{percent → decimal}} \\[8pt] &= \textcolor{#0b5c56}{15} && \textcolor{#5b6660}{\textsf{multiply}}\end{aligned}
What is % of ?

50% of 30 at a glance

50% of 3015
50% as a fraction1/2
30 + 50%45
30 − 50%15

50% of other numbers

QuestionAnswer
50% of 105
50% of 157.5
50% of 2010
50% of 2512.5
50% of 3015
50% of 4020
50% of 5025
50% of 6030
50% of 7035
50% of 7537.5
50% of 8040
50% of 9045
50% of 10050
50% of 12060
50% of 15075
50% of 200100
50% of 250125
50% of 300150
50% of 500250
50% of 1000500

Other percents of 30

QuestionAnswer
1% of 300.3
2% of 300.6
5% of 301.5
10% of 303
12% of 303.6
15% of 304.5
18% of 305.4
20% of 306
25% of 307.5
30% of 309
33% of 309.9
35% of 3010.5
40% of 3012
45% of 3013.5
50% of 3015
60% of 3018
70% of 3021
75% of 3022.5
80% of 3024
90% of 3027

Frequently asked questions

What is 50% of 30?

50% of 30 is 15: change 50% to a decimal (0.5) and multiply by 30.

What is 30 plus 50%?

30 increased by 50% is 45 (30 + 15).

What is 30 minus 50%?

30 decreased by 50% is 15 (30 − 15).

Any other percentage question – a part as a percent, percent change, percent difference: use the Percentage Calculator.