Maths practice for 14 year olds - page 28 of 379
Number of problems found: 7575
- Temperature - linear function
In the morning, at 08:00 hours, the temperature was -8°C, and in the afternoon, at 16:00 hours, the temperature was 24°C. Assuming that the temperature changes steadily, what was the temperature at 13:00 hours, and what was the time when the temperature w - Sarah 4 Sarah and Jamal were learning partners in math class and were working independently. They each started at the point (−2, 5) and moved 3 units vertically in the plane. Each student arrived at a different endpoint. How is this possible? Explain and list the
- Salt water
The ratio of water (in liters) to salt (in grams) needs to be 3 to 2. If we add 10 grams of salt, how much water do we need to add? - Solve 23
Solve the following inequality: 4 - ½ (2 x - 3) < 1/3 (5 - 3 x) - 56.9 divided
56.9 divided by 10 missing exponents = 0.569 - Solve 22
Solve the equation with two ratios: x:14=28:196 - A 100-inch
A 100-inch stick is to be divided into four using the ratio 2: 5: 7: 11. How long is the longest piece?
- Scale model
In a model train set, 1.38 inches represents one foot in real life. The height of One World Trade Center in New York City is 1776 feet. How tall would a scale model of the building be? Should you calculate 1776 x 1.38 or 1776 ÷ 1.38? - The marked
The marked price of the item was P62.50. At a seasonal sale, a discount was given 20% discount, leaving the dealer a profit of 14 2/7 % of the cost of each item. Find the profit and the cost price. - Kenneth 2
Kenneth has 100 pennies, 20 nickels, 10 dimes, and 4 quarters. How many ways can he choose coins that total 25 cents? - Nickels and dimes
Bob has a handful of nickels and dimes worth $2.45. How many dimes are there if there are 4 more nickels than dimes? Hint: A nickel is worth 5 cents, and a dime is worth 10 cents. So, one dime is worth the same as two nickels. - 15 chicken
Fifteen chicken wings for $28.50. If Mei Mei spent $34.20, how many chicken wings did she buy? - Jackie 2
Jackie bought an equal number of tulip bulbs and daffodil bulbs. Along the length of her garden, Jackie planted 6 daffodil bulbs and 3 tulip bulbs per foot. She has 5 daffodil bulbs and 29 tulip bulbs remaining to plant elsewhere. How long is Jackie's gar - Profit and loss Find the cost price and the profit and loss if the percent of profit and loss is based on cost price, Selling Price P2.34, and the percent of profit is 8 1/3%. Find the profit and cost price.
- Discount combined Hussein was allowed a discount of 11% for goods worth sh.8000 and a discount of 8.6% for goods worth sh.17000. What percentage discount was she allowed altogether?
- The price 4
The price of a commodity was increased in the ratio of 5:4. After one month, the same commodity was reduced in the ratio of 7:8 to attract more customers. Suppose the new price was 35. Calculate the price of the commodity before the increase. - Heads and legs 2
There are a number of unspecified numbers of cows and hens in a den. If there are a total of 30 heads and 80 legs in the den, find the number of cows and hens in the den. - The temperature 39
The temperature outside is currently 10 degrees, dropping at an average rate of 2 degrees per hour. If the temperature continues to drop at this rate, what will the temperature be in 7 hours? - Flat internet program
Under her cell phone plan, Sarah pays a flat cost of $69 per month and $4 per gigabyte. She wants to keep her bill at $83.80 per month. Write and solve an equation that can be used to determine the number of gigabytes of data Sarah can use while staying w - A wholesale A wholesale dealer purchased an item from a manufacturer for P2400 less 25% and 25% and sold the same item for P1620. Find the profit and the percent of the profit on cost.
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