Advertisements
Advertisements
प्रश्न
Four times a number is a ______ % increase in the number.
Advertisements
उत्तर
Four times a number is a 300 % increase in the number.
Explanation:
Let x be the number.
So, four times of x is 4x.
Hence, 4x is greater than x by 4x – x = 3x
Percentage increase in `x = (3x)/x xx 100` = 300%
APPEARS IN
संबंधित प्रश्न
A man got a 10% increase in his salary. If his new salary is Rs 1,54,000, find his original salary.
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?
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?
Kayal scored 225 marks out of 500 in revision test 1 and 265 out of 500 marks in revision test 2. Find the percentage of increase in her score
In the year 2015 ticket to the world cup cricket match was ₹ 1,500. This year the price has been increased by 18%. What is the price of a ticket this year?
15% increase in price of an article, which is Rs 1,620, is the increase of Rs ______.
Number of students appearing for class X CBSE examination increases from 91,422 in 1999 – 2000 to 11,6054 in 2008 – 09. Increase in the number of students appeared is approximately 27%.
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.
- What fraction of UV rays does this sunscreen block? Give your answer in lowest terms.
- Use your answer from Part (a) to calculate this sunscreen’s SPF. Explain how you found your answer.
45% of the population of a town are men and 40% are women. What is the percentage of children?
