Inverse relationship + direct relationship - math problems

Number of problems found: 125

  • Volleyball 2
    In a volleyball game, Michael made 4 shots in 8 tries. At this rate, how many shots can he make in 12 tries?
  • Markus painter
    Markus used ¾ liter of paint to cover 10 ½ square meters of wall. How many liters of paint is needed to cover 12 ¼ square meters of wall?
  • Strawberries
    Three people pick strawberries from 48 rows in 8 hours. How many hours do five people need to pick strawberries from 20 rows?
  • The bricklayer
    The bricklayer built a six-meter base of the fence in 3 hours. How long does it take to build a 14 m long base?
  • Cornbreads
    If 4 and a half teaspoons of baking powder are need to make 10 servings of cornbread, how many teaspoons are needed to make 25 servings?
  • Petrol as fuel
    A car can travel 480 miles on a full tank of petrol. The tank holds 60 litres. The fuel gauge shows there are 15 litres left in the tank. How many more miles can the car travel before it runs out of petrol?
  • Ember
    Ember spent $144 on her birthday party for 18 guests. If the cost is at the same rate, how many guests will there if she spends $176?
  • The printer
    A total of 6 piece of book covers were printed in 0.12 hours. Each piece of the book cover was printed in equal time. Calculate the time, in hours, to print 30 book covers.
  • Six identical
    Six identical compressors inflate 180 balloons in one hour. How many balloons inflate one compressor in 10 minutes?
  • Mushroom risotto
    630g of rice is needed to prepare mushroom risotto for four people. How many boxes of 500g rice do you have to buy to prepare risotto for 17 people?
  • Book reading
    Susan thought, "If I read 15 pages a day, I will read the whole book in 8 days. “How many pages would she have to read a day if she wanted to finish the book on the 6th day from the start of reading? And how many pages does the book have?
  • Mr. Ben
    Mr. Ben drives bricks to the construction site. If he drove three times a day, he would make bricks in 8 days. How many times a day would he go every day to be done 2 days earlier?
  • A truck 2
    A truck leaves home with building materials and makes a return trip every six days. To deliver all the materials, you need eight truck trips every month. How many trucks do you need?
  • Olive seeds
    5 kg of oil is pressed from 100 kg of seeds. How many kgs of seeds do we need to produce 85 kg of oil?
  • A family
    A family of four consumes 220 liters of water a day. How many hectoliters of water are consumed by 68 tenants per day?
  • Reading
    If I read 15 pages a day, I will read the whole book in 18 days. How long will it take to read a book if I only read 9 pages every day?
  • Tennis balls
    Can of tennis balls contains 3 balls per can and cost $7 how much will it cost for 36 tennis balls?
  • Coins
    The money - coins are minted from the hardest bronze, which contains copper and tin in a ratio of 41: 9. How much copper and tin are in 2kg of bronze money?
  • Shoemaker
    Both the shoemaker and his apprentice repaired his shoes. The apprentice worked for 6 days and repaired 10 pairs of shoes every day. The shoemaker did the same job in 4 days. How many pairs of shoes did the shoemaker repair per day?
  • Coils of transformer
    The primary coil of the transformer has 400 turns, a current of 1.5 A passes through it and is connected to a voltage of 220 V. For the secondary coil, find the voltage, current, and a number of turns if the transformation ratio k = 0.1.

Do you have an exciting math question or word problem that you can't solve? Ask a question or post a math problem, and we can try to solve it.



We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.



Inverse relationship - math problems. Direct relationship - math problems.