Percentages practice problems
Number of problems found: 1461
- The population
The population of a city increased from 977,760 in 1995 to 1,396,714 in 2005. What is the percent of increase? Round your answer to the nearest tenth of a percent.
There are 500 students in a school. 60% of them are boys and the rest are girls. What is the percentage of girls? Also find the total number of boys and girl in the school.
- Isosceles triangle
Find the area of an isosceles triangle whose leg is twice the base, b=1
- Ms. Althea
Ms. Althea reaped 180 tomatoes from her field. She gave 1/5 of them to a friend, sold 0.75 of the remainder and kept the rest for herself. What percentage of the total did ms. Althea keep for herself?
- Probability 86
At a business conference, there were 10 social workers, 16 doctors, 5 lawyers, and 2 journalists. If a person is picked at random from the entire group, what it is probability: a) to be a lawyer b) to be a doctor.
- Quartile statistics
Use the following data which was obtained from a study of weights of adult men to answer problems: Mean ; 192 lb ; First quartile ; 178lb Median; 185lb ; Third quartile ; 232 lb Mode ; 180 lb ; 86th percentile ; 239 lb Standard Deviation ; 23lb; ; a) What
- Overbooking flight
A small regional carrier accepted 12 reservations for a particular flight with 11 seats. 7 reservations went to regular customers who will arrive for the flight. Each of the remaining passengers will arrive for the flight with a 49% chance, independently
- Solve 13
Solve the missing dimensions for the following triangle: Triangle ABC: AngleA=43 degrees, b=7.0cm, c=6.0cm Question 1. AngleB with units written as degrees Question 2. Angle C with units written as degrees Question 3. a, rounded to the nearest tenth of a
- SAS calculation
Given the triangle ABC, if side b is 31 ft., side c is 22 ft., and angle A is 47°, find side a. Please round to one decimal.
- Four digit codes
Given the digits 0-7. If repetition is not allowed, how many 4 digit codes that are greater than 2000 and divisible by 4, are possible?
- Mr. Erel
Mr. Erel earns 12% compounded quarterly. He projected to collect Ᵽ500,000 after 10 years. What is the amount he needs to invest?
- Commission rate 2
Peterson sold a house and lot worth Php 2,000,000.00. If the owner gave him Php 110,000.00 as commission, what is the commission rate?
- Percentage 74844
The bar contains 12 grams of sugar per 50 grams. What percentage of sugar does the bar have?
Karim uses a photocopier to enlarge the triangle PQR diagram by 150%. a) Write the ratio of the length of P' Q' to the length of PQ. b) Is the ratio of the length P 'R' to the length PR equal to the ratio of the length P 'Q' to the length PQ? c) Use your
- A book 2
A book priced at USD25 is sold with a 30% discount at a bookstore. If the same book is sold online for USD20, buyers are given a 15% discount. By applying the concept of proportion, determine the better option for purchasing the book. Justify your choice.
- Shopping mall
A new shopping mall records 120 total shoppers on their first day of business. Each day after that, the number of shoppers is 10 percent more than the number of shoppers the day before. What is the total number of shoppers that visited the mall in the fir
- Play the flute
There are 100 members 12 play the flute. What % that plays the flute?
- Spirulina 74164
Spirulina seaweed contains 55% protein per 100 grams, i.e., 55 grams of protein. How many grams of protein are in 200 grams of spirulina?
Amanda borrowed $5000 from two sources: her parents and a credit union. Her parents charged 3% simple interest and the credit union charged 6% simple interest. If after 1 year, Amanda paid $225 in interest, how much did she borrow from her parents, and ho
It is estimated that 10% of all federal prisoners have a positive self-image, 40% have a neutral self-image, and the rest have a negative self-image. The estimated probability of rehabilitating a prisoner with a negative self-image is 0.1. With a neutral
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