Maths practice for 13 year olds
Number of problems found: 7198
- A tree 2
A tree is broken at a height of 6 m from the ground and its top touches the ground at a distance of 8 m from the base of the tree . Find the original height of the tree. - Sides to area
If the sides of a triangle are 26 cm, 24 cm and 10 cm, what is its area? - Profit chain
If the manufacturer gains 10%, the wholesale dealer 15%, and the retailer 25% then what is the production cost of a washing machine whose retail price is 1000 eur? - Dividing money 7
A: B: C is in the ratio of 3:2:5. How much money will C get out of Rs 1260?
- Triangular field
Find the area of a triangular field whose sides are 78m, 50m and 112m . - Money sharing
A sum of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets 1000 USD more than D, what is B's share? - Income comparing
Arnold's income is 60% more than that of Brandy. By what percent is Brandy's income less than Arnolds's? - The population 3
The population of a town is 126800. It increases by 15% in the first year and decreases by 20% in the second year. What is the population of the town at the end of 2nd year? - Single discount
Find the single discount equivalent to two successive discounts of 20% and 10% .
- Tax info
The tax-free price of the jacket is €150 and the VAT rate is 24%. Calculate the VAT and Taxable price. - A man 18
A man walks for t1 hours at 4 km/h and then for t2 hours at 3 km/h . If he walks altogether 29 km in 8 hours, find the value of t1 and t2 respectively. - A pair 2
Jane is 5 years older than Tom. In 3 years, the sum of their ages will be 41. How old are Jane and Tom now? - The mixture
If a 6 liters solution with concentration of 20% alcohol is mixed in a 4 liters solution of 60% concentration of alcohol. Find the percentage of alcohol in the mixture. - A provision
A John had provisions for a certain number of days. After 10 days 1/5 of the men desert and he is found that the provisions will now last just as long as before. How long was that?
- An expensive watch
A watch when sold at a profit of 6% yields $ 870 more than when it is sold at a loss of 6% . Find the cost price of the watch. - The bill 2
I paid 3/5 of a bill. If 400 USD of the bill is still due, what was the total amount of the bill? - Two towns
X and Y are two towns . A man goes from town X to town Y at an average speed of 30km/h and returns at the average speed 20km/h. Find the distance between the two towns if the man takes 10 hours on the whole. - Add five to lcm
The least number which when diminished by 5 is divisible by each of 21, 28, 36 and 45. - Front porch
Jon's front porch is 8 feet wide and 12 feet long. Jon wants to stain the wood on the porch next weekend. The stain costs $1.00 per square foot. How much will it cost to buy enough stain for the whole porch?
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