Multiplication + expression of a variable from the formula - practice problems
Number of problems found: 63
- Mixed numbers equation
4 5/9 is the same as the sum of 2 1/3 and 5/6 times a number. What is the number? Enter your answer as a mixed number in simplest form in the box. - The proportion
The proportion's first, second, and third terms are 4, 20, and 13. Find the fourth term. - The enrolment 2
The enrolment at a school has increased from 1400 learners to 1600 learners over 5 years. What is the percentage increase in enrolment? - Unknown var N
Five-eights of a number, N, is 50. What is the value of N? - Pupils - boys and girls
5/8 of the pupils in a hall were boys. 7/10 of the boys wore glasses. 48 boys didn't wear glasses. How many pupils were there in the hall? - Orange juice
Water and orange are mixed in a ratio of 7:4. An amount of 36 cm³ of orange is used. What volume of water is used? - An electorate
In an electorate, 3/4 th of the voters are Tamils. Of the remaining 2/3 rd are Muslims, and the others are Sinhalese. If the number of Sinhalese in that electorate is 587, find the number of voters in that electorate. - Which 15
Which two digits need to be interchanged to make the following equation correct? 16+7*2+4-3=12 A) 2 and 4 B) 7 and 4 C) 16 and 2 D) 7 and 3 - Mother‘s
Mother's weight is 50 kg, 0.5 times his weight, which is exactly 3/2 of the weight of the older sister. How many kilograms does the older sister weigh? - The product 13
The product of two numbers is 48, and one of the numbers is 12. Find the other number. - Polynomial rectangle
If the length and width of a rectangle are (a² - 6a + 4) and ( -2a² - 9a + 3), find the area of the rectangle. - Evaluate expressions
Which expression equals 12? ... - The product 10
The product of two numbers is 40. If one of the numbers is 8/15, what is the other number? - Three rationals
Let x, y, and z represent three rational numbers, such that y is 512 times x and z is 50.25 more than x. If y=15.5, what is the value of z? - Dimensions 83176
If we reduce the length of the rectangle by 2 cm and the width by 1 cm, its area will decrease by 8 cm². If we increase the length of the rectangle by 1 cm and the width by 2 cm, then its content will increase by 13 cm². What were the original dimensions - Expression 82698
Calculate the value of the expression V = 3x²- 2x + 3 for x = -2. - Chocolate 82258
How many pieces does the chocolate have if I ate 6/7 of it, which is 12 pieces? - Product 82004
The product of the three numbers is 63,650. Find the third number if two of them are 25 and 67. - Increases 80772
The product of two numbers we know. If we increase the first factor by 2 and decrease the second factor by two, the product increases by 4. How much does the product change if we decrease the first factor by 3 and increase the second factor by 3? - Expression values
Let A = 5, B = 4.4, and C = 4.25. Find the value of each expression listed below. A² × (B - C) B × (A - C) B + C - A A - B + C
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