Themes, topics - math word problems - page 38 of 169

Number of problems found: 3370

Kilograms - drying
Fresh herbs contain 90% water, dried 10% water. How many kilograms of herbs can we dry from 15 kg of fresh ones?
Competitor time difference
The first competitor completed the track in 2h 12min 11s. How much worse was the other's time of 2h 19min 3s?
Pool plan scale
A 16 m² swimming pool has an area of 1 m² on the city plan. What is the scale of the city plan?
Anthea
Anthea is running an experiment to examine vaccine shelf life, and she must precisely monitor the temperature. The starting temperature is −116 degrees Celsius (°C). The temperature rises by 35 degrees, then falls by 12 a degree. What is the final tempera
The temperature 35
The temperature was -8 degrees at 10:00 in the morning. If the temperature rises 3 degrees per hour, what will the temperature be at 2:00 in the afternoon?
Triangle area proof
Squares are constructed above the overhangs and the transom. Connecting the outer vertices of adjacent squares creates three triangles. Prove that their areas are the same.
Femma
Emma mixes 1 7/8 cup of water with 2/3 cup of orange juice as a part of a recipe. How many cups is her mixture?
A molecule
A molecule travels with a speed of 8100 centimeters per minute (cm/min). How far would the molecule travel in centimeters in 3.19 seconds?
Two drops
Between 5:00 pm to 6:00 pm, the temperature dropped 3 °C. Between 6:00 pm to 7:00 pm, the temperature dropped 4 °C. What was the total drop in temperature from 5:00 pm to 7:00 pm?
Sarah 2
Sarah noticed that the temperature went from 20 degrees and dropped to -10 degrees. Sarah says that the change in temperature is -30 degrees, while her friend Kenya says that the temperature change is 10 degrees. Who is correct? Explain your reasoning
How far 2
How far can a subway car travel in 1 hour if its average speed is 0.96 miles per minute?
The height 3
The height of a car is 46 1/4 inches. A toy model is 2 1/2 inches tall. How many times greater is the height of the car than the height of its model?
Dipole - complex power
For a dipole, calculate the complex apparent power S and the instantaneous value of the current i(t), given: R=10 Ω, C=100uF, f=50 Hz, u(t)= square root of 2 * sin( ωt - 30°). Thanks for any help or advice.
The pilot
The pilot is on a mission with 160 liters of fuel. The distance between the main base and the operation area is 2 hours, and between the main base and the backup base is 1 hour. Assume: - Aircraft fuel consumption is 10 lt/h. - The minimum fuel after land
A fuel
A fuel tank has 28 gallons of fuel. One gallon of fuel weighs 7 1/10 pounds. How many pounds of fuel are in a full tank?
Building a wall
If 12 men can build a wall 398 meters long in 48 days, how long would it take 33 men to build a wall 347 meters long? Answer to 3 decimal places.
A particle 2
If the motion of a particle is described by the relation a(t) = 7t³ + 2 m/s², and the initial velocity of the motion is zero when t = 0 and the distance is 2 m, t = 0.5 s. Determine the velocity and displacement when t = 10 s.
Ivan rented
Ivan rented a truck for one day. The base fee was $14.95, and he drove an additional charge of 73 cents for each mile. When he returned the truck, he had to pay $114.96. How many miles did he drive the truck?
Car fuel
Tanya drove 3 1/2 hours and used 1/3 tank of gas. For how long could Tanya drive using a 1/2 tank of gas? Enter your answer as a mixed number in the simplest form in the box.
A bag 4
A bag contains 18 balls that differ only in colour: 11 are blue and 7 are red. Two balls are picked one after the other without replacement. Find the probability that both are: (i) blue, (ii) the same colour, (iii) different colours.

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