Percentage - Arithmetic

Question: (11) What percent of 250 is equal to 5% of 500?

Solution:

We have to find, ?% of 250 = 5% of 500

Question: (12) What percent of 300 is equal to 20% of 600?

Solution:

We have to find, ?% of 300 = 20% of 600

Question: (13) What percent of 900 is equal to 5% of 3600?

Solution:

We have to find, ?% of 900 = 5% of 3600

Question: (14) What percent of 1700 is equal to 20% of 255?

Solution:

We have to find ?% of 1700 = 20% of 255

Question: (15) 15% of 2700 is what percent of 2025?

Solution:

We have to find 15% of 27000 = ?% of 2025

Question: (16) 25% of 500 is equal to what percent of 1250?

Solution:

We have to find 25% of 500 = ?% of 1250

Question: (17) What percent of 1/2 is equal to 5% of 0.25?

Solution:

We have to find ?% of 1/2 = 5% of 0.25

Question: (18) 10% of 0.25 is equal to what percent of 0.5?

Solution:

We have to find 10% of 0.25 = ?% of 0.5

Question: (19) What % of 0.025 is equal to 10% of 5?

Solution:

We have to find ?% of 0.025 = 10% of 5

Question: (20) What % of 0.5 is equal to 25% of 0.25?

Solution:

We have to find ?% of 0.5 = 25% of 0.25

Question (21) The yearly income of Simon is $250000. If Ryan earns 20% of 80% of yearly income of Simon per month, what is his income?

Solution:

Given, yearly income of Simon = $250000

Per month income of Ryan = 20% of 80% of yearly income of Simon

Therefore, yearly income of Ryan = ?

According to question,

Ryan's monthly income = 20% of 80% of Simon's yearly income

= 20% of 80% of 250000

= 20 × 80 × 25

= 40000

Thus, Ryan's monthly income = $40000

Therefore, Ryan's yearly income = $40000 × 12

[Since there are 12 months in a year]

= $480000

Thus, Ryan's yearly income = $480000 Answer

Question (22) The per kilogram price of potato is 80% of 90% of price of carrot. If the price of carrot is $50 per kilogram, then find the price of potato.

Solution

Given, price of carrot per kg = $50

And price of potato per kg = 80% of 90% of price of carrot

Therefore, price of potato per kg = ?

According to question,

Price of potato per kg = 80% of 90% of price of carrot

= 80% of 90% of 50

= 8 × 9 × 0.5

= 72 × 0.5 = 36

Thus, price of potato per kg = $36 Answer

Question (23) The age of Ryan's is 20% of the sum of his mother's and father's age. If the age of his mother is 50 years and his father's age is 60 years, what is the age of Ryan?

Solution

Given, Age of Ryan = 20% of sum of the age of his mother and father

Given, Age of Ryan's father = 60 year

And age of Ryan's mother = 50 year

Thus, age of Ryan = ?

Now, according to question,

Ryan's age = 20% of (his father's age + his mother's age)

= 20% of (60 + 50)

= 20% of 110

= 2 × 11 = 22

Thus, age of Ryan = 22 years Answer