Fractions + direct relationship - math problems

Number of problems found: 72

  • Snack
    minca CZK 450 was paid for a snack for 30 pupils. How many CZK will we pay for the same snack for 28 pupils?
  • Scale of the map
    map Determine the map's scale, which is the actual distance of 120 km l represented by a segment long 6 cm.
  • Pediatrician
    doctor Pediatrician this month of 20 working days takes 8 days holidays. What is the probability that on Monday it will be at work?
  • Three 43
    penize Three brothers inherited a cash amount of 62,000, and they divided it among themselves in the ratio of 5:4:1. How much more is the largest share than the smallest share?
  • In the
    land In the national park, the ratio of the wooded area to grassland is 4: 1. The total area is 385km2. What area is wooded?
  • Jan
    Honza Jan is 13 years and Peter 21 years old. For how many years will their ages in the ratio of 7:9?
  • Pumps 5
    pump 5 pump pumped in 3 hours 1800 hl of water. How many hectoliters of water pumped 4 equally powerful pumps in 6 hours?
  • In the bakery
    chlieb In 2.25 hours, 24 pieces of bread are baked in the bakery. How many breads are baked in the bakery in 6 hours and 45 minutes?
  • Scale of the map
    city The distance between two cities is actually 30 km and the map is 6 cm. What is the scale of the map?
  • Pamela
    penize Lara Pamela spends her salary of 3000 for food, clothing, recreation and savings, which are in the ratio of 48:20:15:37, respectively. How much does he spend for savings?
  • Cows
    cow 4 cows spent 16 bags of hay in 5 days. How many bags of hay sacks are needed for 5 cows for seven days?
  • Divers
    diving 20-member group of divers carries the air for 15 hours of diving. 4 members of the expedition sick or wasn't came. How many hours is sufficient air to other divers?
  • Proportion 3
    apples For every 8 mango trees in the orchard, there are 4-star apple trees. If there are 1320 trees, how many trees of each kind are there?
  • Babysitting
    babysitting The amount that Susan charges per hour for babysitting are directly proportional to the number of children she is watching. She charges $4.50 for 3 kids. How much would she charge to babysit 5 kids?
  • Proportion 2
    car A car is able to travel 210 km in 3 hours. How far can it travel in 5 hours? Put what kind of proportion is this and show your solution.
  • Points on line segment
    segment Points P & Q belong to segment AB. If AB=a, AP = 2PQ = 2QB, find the distance: between point A and the midpoint of the segment QB.
  • Garden
    garden The rectangular garden has dimensions of 27 m and 30 m. Peter and Katka split it in a ratio of 4:5. How many square meters did Katkin measure part of the garden?
  • Milk2cheese
    cheese From 40 liters of milk is produced 8 kg of cheese how many liters of milk are needed to produce 2 kg of cheese?
  • Five combers
    permutations Five combers harvest 12 rows of strawberries in 4 hours. How many rows of strawberries will two combers harvest in 10 hours?
  • Unknown number 5
    hyperbola Daniel thinks an integer. When he change this number at a ratio of 2:5, he got the number 2.8. Determine what number think Daniel.

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