Question

A man carns $2.000 and spends 10.500. he saves rest of the money
percentage of his savings
There are 700 students in a school out of which 420 are giris. Find the perces
of boys in the school
Mansi obtained 410 marts out of 500 in her half-yearly examination while he
friend got 534 marks out of 500 marks. Find whose performance is better
What is the percentage of prime numbers from 1 to 10?
Please help me to solve this problem ​

Answer 1

Answer:

Percentage of his savings = 47.5%

Percentage of boys = 40%

Mansi's friend's performance was better.

Percentage of prime numbers from 1 to 10 = 40%

Step-by-step explanation:

A man earns $20,000

He spends $10,500

∴ He saves $(20,000 - 10,500) = $9,500

Percentage of his savings = $\frac{9,500}{20,000}$ x 100% = 47.5%

There are 700 students in a school.

420 are girls.

Number of boys = 700 - 420 = 280

Percentage of boys = $\frac{280}{700}$ x 100% = 40%

Mansi obtained 410 marks out of 500

Percentage of marks Mansi obtained = $\frac{410}{500}$ x 100% = 82%

Her friend got 534 out of 600

Percentage of marks Mansi's friend obtained = $\frac{534}{600}$ x 100% = 89%

∴ Mansi's friend obtained 7% more marks than what Mansi obtained.

∴ Mansi's friend's performance was better.

Prime numbers from 1 to 10 are 2, 3, 5 and 7 = 4 numbers

Percentage of prime numbers = $\frac{4}{10}$ x 100% = 40%