Math: Percentages
An empty pool has the capacity to hold 2700 cubic feet of water. A particular hose fills this pool with water at a rate 25 cubic feet per minute. If the hose is placed into the empty pool and turned on, approximately what percent of the pool will be filled with water after 1 hour?
Please choose from one of the following options.
A) 10 %
B) 44 %
C) 56 %
D) 93 %
C, 56%
Compound Interest FORMULA
Percent Change FORMULA
A = P (1 + R)t
(Old Price - New Price) ÷ Old Price and multiply that number by 100
A high school's graduation rate is defined to be the percentage of the senior class that graduates. Last year 406 of Sagamore High School's 452 seniors graduated. This year the school expects the previous year's graduation rate to increase by approximately 2 percentage points. If there are 436 students in this year's senior class, which of the following best approximates the number of seniors that Sagamore High School expects to graduate this year?
A) 390 students
B) 400 students
C) 410 students
D) 420 students
B, 400 students
A gumball machine contains 23 green gumballs, 52 red gumballs, 34 blue gumballs, 61 yellow gumballs, and 30 pink gumballs. What percent of the gumballs are red?
26%
A software distributor charges $41 per license of a particular utility. The distributor offers a 10% discount on each license after the first 20. How much would a business pay to buy 40 licenses of the utility?
$1,558
Ivy is downloading a computer program from the Internet. After 8 minutes, the computer program is 35% downloaded. If the computer program continues to download at the current rate, about how much longer will it take for Ivy's computer to finish downloading the program?
14.8 ≈ 15
Dyami earns a 4% commission for the first $30,000 of sales he makes per month. He earns a 5% commission for the portion of his sales over $30,000. If Dyami sells $38,000 worth of merchandise in a month, how much will he earn in commissions, in dollars?
$1,600
Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is 15% off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional 5 % off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.
81%
Layla and Nathan each sent out college recruitment e-mails to different prospective students. Students followed a link to get more information from 22% of Layla's 400 e-mails and from 60 out of 350 of Nathan's e-mails.
To the nearest percent, what percent of the total students clicked on the link from the e-mails?
20%
The student population at University X consists of 63% undergraduate students and 37% graduate students. If 23% of undergraduate students and 42% of graduate students wear contacts, what percent of all students wear contacts?
30%