Algebra - practice problems - page 9 of 305

Number of problems found: 6095

The sum 30
The sum of 8 times a number and 5 times another number is 184. The first number minus the second number is -3. What are the numbers?
A mixed school
In a mixed school, 5/9 of the pupils are boys. If there are 128 girls, how many pupils are there altogether?
Xero had
Xero had a piece of ribbon. He used 0.4 of it to tie 2 small boxes and 2 large boxes. The length of ribbon needed for a large box is 3 times the length of ribbon needed for a small box. Xero used 5/6 of the remaining ribbon to decorate the presents. a) Wh
The common difference 2
Find the common difference of an arithmetic progression (AP), whose first term is 5 and sum of its first 4 terms is half the sum of the next four terms.
Von went
Von went to a mall to buy some things for his school projects. He spent 5/8 of his money in a bookstore and 1/5 of the remainder in a grocery store. If he spent P120 in the grocery store, how much money did he have at the start? How much money did he have
A tailor
A tailor bought 72 meters of white cloth and 16 meters of blue cloth. The material was cut into equal lengths to make a school uniform. What was the greatest length of each piece of cloth that was cut?
Carol 2
Carol bought 5 snow hats and 2 pairs of gloves. The hats were priced at $12, and each pair of gloves cost the same amount. If the total amount of Carol's purchase is $135, what was the cost of 1 pair of gloves?
A business
Two people, A and B starts a businesses. A began a business with $ 21000 and is joined afterwards by B with $ 36000. After how many months did B join, if the profits at the end of the year are divided equally?
Telephones
The cost of manufacturing x telephones by Josh Mobiles is given by C = 500 + 45x, and the revenue from selling these are given by R = 65x. How many telephones must be produced and sold in order to realize a profit?
Gustavo
Gustavo is conducting an experiment with plants for a science project. He needs to divide a certain amount of fertilizer so that each of the 12 plants gets 10.5 ounces of fertilizer. Use the guess, check, and revise strategy to solve the equation f÷12=10.
Two pieces
Two pieces of cloth 15 and 20 meters long are to be cut into small pieces of equal lengths. What will be the greatest length of each piece?
Of three
Of three positive numbers the product of the first and second is 42, second and third is 56 and that of third and first is 48. Find the third number.
In which
In which of the following expressions does the number 16 fill in the blank so that the equation is true? Select all that apply. A) 8(___ + 3) = 32 + 24 B) 8(2 + 9) = ___ + 72 C) 4(7 + 4) = 28 + ___ D) 8(5 + 6) = 40 + ___
Joseph 2
Joseph visits the club on every fifth day, Harry visits on every 24th day, and Susan visits on every ninth day. If all three of them met at the club on a Sunday, then on which day will they meet again?
On Monday
On Monday, Jason used 2/7 of his money to buy a book. On Tuesday, he used 1/2 of his money to buy a toy. If he has 6 dollars left, how much money he has in the beginning? What fraction of money is left?
Fund raising
A number of persons decided to raise 3 millions euros by equal contributions from each. Had they contributed 50 euros each extra, the contribution would have been 3.25 millions euros . How many persons are there?
GCD&LCM of three
GCD of three numbers is 30 and LCM is 900. As two the are 60 and 150, find the number.
Beeps
An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 a.m. The next time, when they will beep together at the earliest?
A person 2
A person has 2 parents, 4 grandparents, 8 great grandparents, and so on. Find the number of his ancestors during the ten generations preceding his own.
The product 18
The product of two consecutive natural numbers which are multiples of 3 is equal to 810. Find the two numbers.

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