Multiplication + ratio - math problems

Number of problems found: 39

  • Ratio
    ratio_2 Unfold number 1963 in the ratio 9:2:2.
  • Ratios
    circle Divide: a) 250 CZK in the ratio 2:3 b) 1000 CZK in the ratio 4:7:9
  • Ratio - proportion
    ratios2 Reduce the number 16 in proportion 3:2 5:4 11:8
  • Euros
    fractal_1 Michal, Peter, John and Lenka got together 2,400 euros. They share an amount in ratio 2:6:4:3. How many got each of them?
  • Two xeroxes
    xerox The performances of the two copiers are in the ratio 3: 4. A machine with higher power will make 7,200 copies in one hour. How many copies will both machines make together in 5 hours?
  • Gain
    solar Find the gain whenever the output power is 21x the input power.
  • Discount
    sales_discount Product has been discounted twice by 19%. What is the total discount given?
  • Cyclist
    cyclist_2 A cyclist passes 88 km in 4 hours. How many kilometers did he pass in 8 hours?
  • Chocolate
    cokolada Leslie bought 8 same chocolates for 16 Eur. How many euros will he pay for 25 chocolates?
  • Chicks
    kuriatko How many chicks were hatched from 4500 eggs, when an average of 100 eggs hatched 87 chicks?
  • Prime divisors
    plusminus_1 Find 2/3 of the ratio of the sum and the product of all prime divisors of the number 120.
  • Cats
    cats Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days?
  • Gear wheels
    gear Two gear wheels, which fit together, have the number of teeth z1=58 and z2=149. Calculate the speed of the first wheel, if the second wheel rotates 1232 revolutions per minute.
  • Pumps
    fuel_tank 6 pump fills the tank for 3 and a half days. How long will fill the tank 7 equally powerful pumps?
  • Server
    p_pro Calculate how many average minutes a year is a webserver is unavailable, the availability is 99.99%.
  • School trip
    school_trip School trip cost 247.2 Eur for one class (24 students). How much would cost a trip for two classes? (both classes together have 53 students)
  • Chickens
    chickens 2 chickens give 2 eggs in 2 days. How many eggs can give 8 chickens for 8 days?
  • Bonus
    moeny The gross wage was 1323 USD including 25% bonus. How many USD were bonuses?
  • Daily average
    weather_forecast Calculate the average temperature during the day, when 15 hours were 20 °C and 9 hours was 13 °C.
  • Hens
    chicken 11 hens will eat spilled grain from 6AM to 16 PM. At 11 hour grandmother brought 4 hens from the neighbors. At what time was grain out?

Do you have an interesting mathematical word problem that you can't solve it? Submit 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.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...



Check out our ratio calculator.