Grade - math word problems - page 653 of 953

Number of problems found: 19048

Alice
Alice spent 5/11 of her money on a backpack. She has 42 dollars left. How much was her backpack?
Bulbs - short lifespan
The life of the bulbs has a normal distribution with a mean value of 2000 hours and a standard deviation of 200 hours. What is the probability that the light bulb will last for at least 2100 hours?
Normal Distribution Probability
The waiting time in the buffet is governed by the normal distribution with a mean value of 130 seconds and a variance of 400. What is the probability that someone will wait less than a minute and a half?
Continent
Uncle Tann travels a lot. In each city, he buys a postcard as a souvenir. Tana divided the postcards for him according to the continents. She found that out of 63,756 postcards, one seventh is from Asia, one quarter is from America, one eleventh is from A
A boy
A boy of 1.7m in height is standing 30m away from the flagstaff on the same level ground. He observes that the angle of deviation of the top of the flagstaff is 30 degrees. Calculate the height of the flagstaff.
Rectangle Dimensions Reduce Ratio
Reduce the dimensions of the rectangle with dimensions of 21 cm and 3 dm in a ratio of 4:6. In what proportion will the areas of both rectangles be?
Fabric Suits Length Meters
The cotton fabric in the bale in the store measures 101/5 meters. How many 10/7 meter suits can we sew from the whole bale of fabric?
Bicycle Gear Options
Peter got a new bike for his birthday. His bike was equipped with many gears. How many gear options does Peter have if you have three wheels at the front and eight wheels at the back? List them all
Tank percentage
288hl of water was filled into a block-shaped tank with bottom dimensions of 12 m and 6 m and a depth of 2 m. What percentage of the volume of the tank did the water occupy?
Cuboid and cube
A block with edges of lengths of 10 cm and 8 cm has the same volume as a cube with an edge of the length of 1 dm. Calculate the third dimension of the block. Compare the ratio of the surfaces of both bodies.
Class children count
How many children are in a class where one-eighth is three children?
Charity Contributions Same Amount
Vojta and Martin have been contributing to charity since the same day. Vojta contributes 110 CZK every week. Martin contributes 85 CZK every week, and in addition, he made a one-off contribution of 300 CZK at the beginning. Calculate how many weeks Vojta
Two Inlets Fill Tank
The first inflow fills the tank in 4 hours and the second tributary in 6 hours. How long will it take to fill both tributaries simultaneously, but the species will start an hour later?
Pexeso
The drawing paper has dimensions of 60cm and 840mm. Pupils have to divide it into squares to make a pexeso. What dimension must squares have if their side is larger than 3cm and less than 10cm?
Dividing Lines into Parts
Divide three lines with lengths of 12 cm, 24 cm, and 64 cm into equally long and, at the same time, the most extended possible parts. How long will the individual parts be, and how many will there be?
Fruit harvest
Five workers harvested fruit in 150 hours. How many temporary workers have to work to harvest fruit in 250 hours?
Velocity calculation
Calculate the unknown velocity x if: 24 km/h. ... . .. .20min x km/h. ... . .. .12min
Triangles
Ivo wants to draw all the triangles whose two sides have a length of 4 cm and 9 cm, and the length of the third side is expressed in whole centimeters. How many triangles does he have?
Workshop production ratio
They produced a total of 7,290 light bulbs in three workshops. How much did each workshop produce when we write their production in the ratio of 2:3:4
Copy center profit
They print 1,300 copies at the copy center. One copy costs 10 cents. The cost of printing one copy is 3 cents. The saleswoman receives €25 per day. How much does a copy center make per day?

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