Advertisements
Advertisements
Question
Sachin and Sanjana are calculating 23% of 800.

Now calculate 52% of 700 using both the ways described above. Which way do you find easier?
Advertisements
Solution
First way
52% of 700 = (1% of 700) × 52
= `(1/100 xx 700) xx 52`
= (0.01 × 700) × 52
= 7 × 52
= 364
Second way
52% of 700 = `52/100 xx 700`
= 0.52 × 700
= 364
So, second way, we have to find easier.
APPEARS IN
RELATED QUESTIONS
Write the following as percent:
11 : 80
Rohit deposits 12% of his income in a bank. He deposited Rs 1440 in the bank during 1997. What was his total income for the year 1997?
The cost of an article is first increased by 20% and then decreased by 30%, find the percentage change in the cost of the article.
Express the following percentage as a fraction and as a decimal number:
25 %
Express the following statement in the percentage form:
21 eggs out of 30 are good
The price of rice rises from Rs. 30 per kg to Rs. 36 per kg. Find the percentage rise in the price of rice.
12% of 250 litre is the same as ________ of 150 litre
Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun.
A label on a sunscreen with SPF 30 claims that the sunscreen blocks about 97% of harmful UV rays. Assuming the SPF factor is accurate, is this claim true? Explain.
A ______ with its denominator 100 is called a per cent.
In a class of 50 students, 8 % were absent on one day. The number of students present on that day was ______.
