Numbers + reason - math problems

Number of problems found: 402

  • Mushrooms
    The ratio of dry matter and water is 1: 9 for most mushrooms. Dry matter consists of carbohydrates, proteins, minerals, fat and water in a ratio of 50: 30: 8: 3: 9. How many kg of fresh mushrooms need to be processed into a 10 kg package of dried mushroom
  • Balls in row
    Calculate the number of ways of placing 4 black balls, 4 turquoise balls and 5 gold balls in a row.
  • Dividing
    When dividing the tangerines into packages of 8 or 10, one always remained. How many were there if there were more than 250 and less than 300?
  • White balls
    I have 3 white balls and 5 red balls in my pocket. How many least balls do I have to remove from the bag to make sure that the pulled out ball is definitely red?
  • Rajendra
    Rajendra a farmer had two sons and two daughters. He decided to divide his property among his sons and daughters. So he wrote a "WILL" about distribution of his property. According to his "WILL", he desired to give 3/5 th of the property to his sons in eq
  • Nicolas
    Nicolas and his father can repair one desk in 1/3 hour. How many desks can they repair in 3 hours?
  • A sum
    A sum of money is shared between Peter, John and Henry in the ratio 2:3:5. a) express Henry's share as fraction of John's share. b) what fraction of the whole sum of money is John's share?
  • Lcm = 22 + gcd
    The least common multiple of two numbers is 22 more than their greatest common divisor. Find these numbers.
  • Gasoline fuel
    You just drove your car 300 miles and used 40 gallons of gas. You know that the gas tank on your car holds 12 1/2 gallons of gas; if the gas you buy is $2.50 per gallon. What would you pay to fill one-half of your tank?
  • Phone number
    Ivan's phone number ends with a four-digit number: When we subtract the first from the fourth digit of this four-digit number, we get the same number as when we subtract the second from the third digit. If we write the four-digit number from the back and
  • Four-digit number
    For a four-digit number abcd, ab: bc = 1: 3 and bc: cd = 2: 1 (ab, bc and cd are two-digit numbers from digits a, b, c, d). Find this number(s).
  • Two numbers
    One number is by 79 larger than the other. If we divide the larger number by the smaller one, we get the ratio 5 and the remainder 11. Determine both numbers.
  • When 5
    When 5 is subtracted from both my numerator and denominator I become 3/4. What fraction i am?
  • Athletics team
    All athletes in the athletics team from Ostrava can start in four, five, six and seven stages, and no one will be present. How many average athletes are in one athletic group if there are a total of twelve groups in the section? Consider the smallest numb
  • The three
    The three boys Adam, Boris and Cyril are to be taken on a two-seater ski lift. How many different removal options are there? What would it be like if four boys or five were to be taken away?
  • Boys and girls 8
    In a class of 35 boys and girls that has a ratio of 2:5, 5 boys are absent and 5 boys are present. How many students are present?
  • Special sequence
    What if            2×9=1            3×9=2            4×9=3            5×9=4            6×9=5            7×9=6            8×9=7            9×9=8           10×9=9    then 1×9=??? answer with solutions. .. ..
  • Chad buys
    Chad buys peanuts in 2-pound bags. He repackages them into bags that hold 5/6 pound off peanuts. How many 2 pound bags of peanuts should Chad buy so that he can fill the 5/6-pound bags without having any peanuts left over?
  • Five number code
    I have a 5 digit code on the bag that I forgot. All I remember is that it was a symmetric number and the sum of its digits was 22. Write all the numbers that can be a code. .
  • Petra's test
    The answer will be given 8 marks, and the wrong answer will be deducted 3 marks. The total number of marks obtained by the school is 36. If Petra answered six questions correctly,   how many questions were answered incorrectly by the student from the scho

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Numbers - math problems. Reason - math problems.