Maths practice for 14 year olds - page 6 of 370

Number of problems found: 7397

Children ratio
In a certain office 1/3 of the workers are women,1/2 of the women are married and 1/3 of the married women have children. If 3/4 of the men are married and 2/3 of the married men have children, what part of the workers is without children?
Scholarship 3
The ratio of number of boys to that of the girls in a school is 3:2. If 20% of boys and 25% of the girls are scholarship holders, find the percentage of those who are not scholarship holders?
A long train
A train passes a standing man in 6 sec and 210 m long platform in 16 s . Find the length and the speed of the train.
The profit 5
A man buys 12 pens for 60 eur and sells them at 5 pens for 30 euros. What is his profit percentage?
Shares
1300 USD are divided among A, B, C and D in such a way that: share of (A/B)=(B/C)=(C/D) = (2/3)
Spheres - ratios
The surface area of two spheres are in the ratio 1 : 4 . Find the ratio of their volumes.
Two class train
The ratio of first and second class train fares between two stations is 3:1 and that of the number of passengers travelling between these stations by first and second class is 1:50. If on a particular day USD 1325 be collected, then the amount collected f
The radius 3
The radius of a solid circular cylinder decreases by 20% and its height increases by 10% . Find the percentage change its : (a) volume (b) curved surface area.
Percent to number
If 75% of a number is 225, what is the number?
Three people
Three people - Peter, Quinton and Roland. 5 years ago, the average age of P and Q was 15 years. Present average age of P, Q and R is 20 years. Find the age of R after 10 years.
Monthly income
There are three working people - X, Y, Z. The average monthly income of X and Y is 5050 USD.The average monthly income of Y and Z is 6250 USD, and the average monthly income of X and Z is 5200 USD. What is monthly income of X?
Common work
39 men can repair a road in 12 days working 5 hours a day. How many days will be required to complete the work by 30 men working 6 hours a day?
Big school 2
The ratio of the number of boys to the number of girls in a school of 450 pupil is 4 : 5 . When some new boys and girls are admitted, the number of boys increases by 25 and ratio of boys and girls changes to 9 : 13 . Calculate the number of new girls admi
Worker 25
Worker A can do 2/3 of a certain work in 12 days and B can do 1/6 of the same work in 4 days, Find in how many days will they together complete the work?
Three workers 7
The daily wages of workers A, B and C are in the ratio 7:6:10. If C earns 80 EUR per day; find the per day earnings of A and B.
5 years
5 years ago the age of a father was thrice the age of his son. In 5 years time, the age of the father will be twice the age of his son at that time. Find their present ages.
Money exchange
A told B, "If you give me 1/3 of your money I'll be 50 USD". In turn B told A, " If you give me 9 USD then we'll be the same amount of money". Find their money.
The rates
The rates of working of A and B are in the ratio 3 : 4. What is the ratio of the number of days taken by them to finish the work?
The sum 50
The sum of five consecutive integers is 385. Which one of these five integers is prime?
One ticket 2
In a lottery, 10000 tickets are sold and ten prizes are awarded. What is the probability of not getting a prize, if you buy one ticket?

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