Sum and rounding

I know two numbers whose sum is 20. When they each round and then added together I get the 30. What are this numbers?

Correct answer:

a =  15
b =  5

Step-by-step explanation:

15+5=20 20+10=30 a=15

We will be pleased if You send us any improvements to this math problem. Thank you!


Tips to related online calculators
Do you want to round the number?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • How many
    numbers2_3 How many numbers are less than 222 with a digit sum is 8?
  • Numbers
    ten Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?
  • What is
    dices2 What is the probability that the sum of 9 will fall on a roll of two dice? Hint: write down all the pairs that can occur as follows: 11 12 13 14 15. . 21 22 23 24. .. . 31 32. .. . . . . . .. . 66, count them, it's the variable n variable m: 36, 63,. .. .
  • Reducing scale
    map_mo I am sizing some landscaping and I measured everything for a 20 to 1 scale. I realized when I was done that it was at 30 to 1. How can I convert what I already have to 30 to 1. (Example, grass area is 22,871.6' at 20 to 1, how do you figure it out to be 3
  • Digit sum
    numbers_19 Find the smallest natural number n, the digit sum of which is equal to 37.
  • Dance ensembles
    dancers 4 dance ensembles were dancing at the festival. None had less than 10 and more than 20 members. All dancers from some of the two ensembles were represented in each dance. First, 31 participants were on the stage, then 32, 34, 35, 37, and 38. How many danc
  • Rounding
    approx The following numbers round to the thousandth:
  • Rounding
    periodic6 Double round number 727, first to tens, then to hundreds. (double rounding)
  • Tiles
    100dlazdic How many tiles of 20 cm and 30 cm can build a square if we have a maximum of 100 tiles?
  • Ratio three numbers
    suv Three numbers SUV are in the ratio 1:2:3. Their sum is 24. Find this numbers and write their add and sum.
  • Round it
    rounding 0.728 round to units, tenths, hundredths.
  • Birthdate
    lizatka Jane on birthday brought 30 lollipops and 24 chewing gum for their friends. How many friends has, if everyone receives the same number of lollipops and chewing gums? How much chewing gum and lollipops got any friend?
  • Quotient
    math Find quotient before the bracket - the largest divisor 51 a + 34 b + 68 121y-99z-33
  • How many
    zlomky How many integers are greater than 547/3 and less than 931/4?
  • Chocolate
    cokolada_1 How many times do we have to break a chocolate bar composed of 10 × 12 pieces to get the 120 parts?
  • Sum of four numbers
    seq_6 The sum of four consecutive natural numbers is 114. Find them.
  • 7 digit number
    numbers2_49 If 3c54d10 is divisible by 330, what is the sum of c and d?