Ratio + percentages - practice problems - page 3 of 6
Number of problems found: 118
- Percentages and numbers
How many percent is number 69 smaller than number 276? - Karim
Karim uses a photocopier to enlarge the triangle PQR diagram by 150%. a) Write the ratio of the length of P' Q' to the length of PQ. b) Is the ratio of the length P 'R' to the length PR equal to the ratio of the length P 'Q' to the length PQ? c) Use your - The angles ratio
The angles in the ABC triangle are in the ratio 1:2:3. Find the angles' sizes and determine what kind of a triangle it is. - Carrot seed
Carrot seed germination is 85%, and the weight of 1000 carrots seeds is 2.4g. How many seeds are likely to germinate if we sow 8g of seeds? - Parking
At a building parking, 245 spaces are for cars, 56 are for vans, and the rest are for buses. If 14% of all parking spaces are for buses, how many parking spaces are there in the building? How many spaces are for buses? - Speedometer
The speedometer of a car reads 66 km/h. It's accurate to within 4.1% What is the maximum possible error? - Lathe
From the cube of edge, 37 cm was a lathed maximum cylinder. What percentage of the cube is left as waste after being lathed? - The balance 2
If your balance at the end of 4 years is 50000, at a 5% interest rate, What was your original investment? - Ratio three numbers
Three numbers SUV are in the ratio 2:3:4. Their sum is 90. Find these numbers and write their add and sum. - Metal alloy
What is the metal ratio in the alloy in the 50 tonnes of steel to 30 kg nickel? - Louvers
The company charges for office equipment louvers total 262 Eur. From the delivery, the bill is obvious that the louvers are 76 Eur more expensive than their installation. What percentage of the total charged is the installation of louvers? - TV fail
The TV has average 35 failures after 10,000 hours. Find the probability of TV failure after 400 hours of operation. - Determine 26191
The rectangle has side lengths of a = 40 cm and b = 10 cm. We reduce side a's length by 30% and side b by 10%. Determine how many% less the area of the rectangle has decreased. - VAT
John paid 1000 Euros in store for purchase. Calculate value-added tax (VAT), which is paid in the purchase, if the VAT rate is 20%. - Circumference 71304
The PQR triangle with a circumference of 25.5 cm has sides in a ratio of 4:6:5. Determine the lengths of its sides. - Solution mixtures
We have 1 liter of 80% solution. Every hour, pour 1 dl of the solution, add 1 dl of water (a 0% solution), and mix. What percent solution will we have after two mixings? - Ratio of sides
The triangle has a circumference of 21 cm, and the length of its sides is in a ratio of 6: 5: 3. Find the length of the longest side of the triangle in cm. - Ratio iso triangle
The ratio of the sides of an isosceles triangle is 7:6:7. Find the base angle to the nearest answer correct to 3 significant figures. - Mushrooms
Fresh mushrooms contain 94% water and dried 11%. How many kilograms of fresh mushrooms are needed to collect to get 8 kg dried? - Bonus
The gross wage was 1323 USD, including the 25% bonus. How many USD were bonuses?
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