Maths practice for 14 year olds - page 290 of 370

Number of problems found: 7383

Determine 3826
Determine 120% of numbers 16, 32, 48, and 52.
Three friends
Danica, Lenka, and Dalibor have 96 kg altogether. Lenka weighs 75% more than Dalibor, and Danica weighs 6 kg more than Dalibor. Determine the weight of Danice, Lenka, and Dalibor.
Previous 3824
There are 48 bottles in the third row, seven fewer in each row than in the previous row. Find the number of bottles in the first row.
Numbers 3823
The sum of the two numbers is 48. 12.5% of the first number equals exactly 4. Find both of these numbers.
Determine 3821
Determine y: 32^y = 2
One-fourth 3820
Darius said to Miloš: I think a number. If I square it to one-fourth and then multiply it by 3, I get its square root. Find the unknown number that is greater than zero and belongs to the set of positive integers.
Infinitely 3818
We have 2 numbers. If we multiplied the first number's third root by the second number's square root, we would get the number 18. Determine these 2 numbers. Calculate only the integer solution if the problem has infinitely many solutions in the set of rea
Diagonals
The diagonal of a rhombus is 20 cm long. If its side is 26 cm, find the length of the other diagonal.
Determine 3814
Determine the third, fourth, and fifth GP members if a1 = -0.5 with q = -4.
Probability 3813
Natalia went to the closet to pick out Daniel's briefs. Daniel has one piece of white briefs and one piece of black briefs in the closet. What is the probability that Natalie will take off his white briefs?
Expression 3811
Determine what y equals in the expression 5^y = 1/25
Mean
The mean of 50 items for a student's food is 38.6. When checking the work, he found that he had taken one item as 50 to read as 40 correctly in these circumstances. What should the correct arithmetic mean?
Determine 3805
Denis has 43% more money than Damian, and Zuzana has 12% less money than Damian. They have a total of 165 euros and 50 cents. Determine how much money Denis, Damian, and Zuzana have.
Expression: 3804
Specify the value of the expression: (1024^0.1): 9
Calculate 3803
Calculate the value of y: 3^y = 0.333
Difference 3802
Determine the second term and the difference AP if a3 = 5 and a1 + a3 = 16.
Determine 3800
Dano and Juraj have a total of 120 euros. Juraj has 40% less money than Daniel. Determine how much money Daniel and Juraj have.
Q of GP
Calculate the quotient of geometric progression if a1=5 and a1+a2=12.
Number 3797
Which number is hidden behind x: 2 · x = 16^0.5
Determine 3796
Determine the quotient and the second GP member if a3 = -5, a2 + a3 = -7

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