if 75% of your class is working how many students are working out of 40
One non-calculator trick (in keeping with this quick-tricks Hub) to do 75% of 40 is to know that 10% of any number can be seen by moving the decimal point over 1 place toward your left hand. With 40, the decimal point isn't seen; but if it were it would be seen this way: 40.0 If you move the decimal point over one place toward your left hand, you'd get 4 (or 4.0). That means that 4 is 10% of 40.
Now that you know 4 is 10% of 40, all you need to do see what 5% is, is to keep in mind that because 5 (%) is half of 10 (%), and since 2 if half of 4 - 5% of 40 is 2.
Since there are 7 10-percents in 70, you'd know that you need to multiply that 4 (which is 10%) by 7. (4 x 7 is 28). That's only 70 percent of 40, so to get 75 percent of 40 you'd need to add that 2 (the 5% you thought of earlier) to the 28. So, 28 (which is 70%) and 2 (which is "that extra 5%) is 30 - and that's the 75%.
A simpler way (if you know your percents a little) might be to keep in mind that 75 percents is 3 25-percents, and 25 percent is always one-quarter (one-fourth). Since it's easy to see that one-fourth of 40 is 10, all you need to think of is that 3 times that one-fourth (3 times 25%) is 30.
Another simple approach might be to keep in mind that 75% is 25% fewer than 100%, so if you think up what 25% (one fourth) is, and subtract that from the 40 (which is 100% of 40) - you have your answer. In other words, since you know that 25% (one-quarter) of 40 is 10; all you have to do is subtract 10 (the 25%) from 40 to see what 75% of it is.
by creid 8 years ago
what percent of 40 is 1/4?
by Ginny 10 months ago
What is the best anime or manga for a 10 year old boy?
by Jackie Lynnley 23 months ago
Why is that I wonder? I mean isn't it the Christians that are being persecuted and aren't they the ones we should be giving refuge to? Why are the numbers so very low compared to Muslim refugees? You would think the numbers would be even at worst but no. "(CNSNews.com) – The number of Syrian...
by mathsciguy 7 years ago
Many people in the world today have abandoned any rigorous sense of rationality in favor of a life of il-logic. This is an opportunity for those who have not to share and comment upon their experiences with the chronically illogical.My sister took a job at a small diner that I frequented, and...
Copyright © 2018 HubPages Inc. and respective owners. Other product and company names shown may be trademarks of their respective owners. HubPages® is a registered Service Mark of HubPages, Inc. HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.
|HubPages Device ID||This is used to identify particular browsers or devices when the access the service, and is used for security reasons.|
|Login||This is necessary to sign in to the HubPages Service.|
|HubPages Traffic Pixel||This is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.|
|Remarketing Pixels||We may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.|
|Conversion Tracking Pixels||We may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.|