English

Increase of a number from 150 to 162 is equal to increase of ______ per cent.

Advertisements
Advertisements

Question

Increase of a number from 150 to 162 is equal to increase of ______ per cent.

Fill in the Blanks
Advertisements

Solution

Increase of a number from 150 to 162 is equal to increase of 8 per cent.

Explanation:

Initial number = 150

Final number = 162

Increased number = 162 – 150 = 12

Per cent of increased number = `12/150 xx 100`

= `120/15`

= 8%

shaalaa.com
  Is there an error in this question or solution?
Chapter 9: Comparing Quantities - Exercise [Page 290]

APPEARS IN

NCERT Exemplar Mathematics Exemplar [English] Class 8
Chapter 9 Comparing Quantities
Exercise | Q 22. | Page 290

RELATED QUESTIONS

On Sunday 845 people went to the Zoo. On Monday only 169 people went. What is the per cent decrease in the people visiting the zoo on Monday?


The population of a city decreased from 25,000 to 24,500. Find the percentage decrease.


Arun bought a car for ₹ 3,50,000. The next year, the price went upto ₹ 3,70,000. What was the percentage of price increase?


Mohan's income is Rs 15500 per month. He saves 11% of his income. If his income increases by 10%, then he reduces his saving by 1%, how much does he save now?


The number of illiterate persons in a country decreased from 150 lakhs to 100 lakhs in 10 years. What is the percentage of decrease?


The price of a scooter was Rs. 34,000 last year. It has increased by 20% this year. What is the price now?

In 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000. Find the per cent increase in the consumption of water from 1975 to 2000. Also, find the annual per cent increase in consumption (assuming water consumption increases uniformly).


If the price of petrol, diesel and LPG is slashed as follows:

Fuel Old prices/
litre (in Rs)
New price/
litre (in Rs)
% Decrease
Petrol / L 45.62 40.62 ______
Diesel / L 32.86 30.86 ______
LPG/14.2kg 304.70 279.70 ______

Complete the above table.


For an amount, explain why, a 20% increase followed by a 20% decrease is less than the original amount.


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.

Suppose a sunscreen allows 25% of the sun’s UV rays.

  1. What fraction of UV rays does this sunscreen block? Give your answer in lowest terms.
  2. Use your answer from Part (a) to calculate this sunscreen’s SPF. Explain how you found your answer.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×