Double 5

Peter was thinking of a number. Peter doubles it and gets an answer of 8.6. What was the original number?

Result

n =  4.3

Solution:

n=8.6/2=4310=4.3n = 8.6/2 = \dfrac{ 43 }{ 10 } = 4.3

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 1 comment:
#
Math student
Makes no sense

avatar









Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Division
    division Divide by the number 0.2 is the same as multiply by what number?
  2. Write 3
    plusminus Write a real world problem involving the multiplication of a fraction and a whole number with a product that is between 8 and 10 then solve the problem
  3. Tenths digit
    numbers2 For 10.932, which digit is in the tenths place?
  4. Evaluate
    calculator_3 The division of numbers 18 and 6 increase by product of the numbers 156 and 0.001
  5. On the trip
    skola_17 On the trip were more than 55 children, but less than 65 children. Groups of 7 could be formed, but groups of 8 no. How many children were on a trip?
  6. President
    gasparovic President of Slovakia earns a monthly € 7844 per month. How many times earn than Jimmy's monther salary € 612? 15.3.2014 the presidential election, which decides who will almost effortlessly 5 years to receive such space salary for nothing;)
  7. Math test
    logo_skola In class 6.A are 26 students and the teacher had managed to give tests to 13 students. 13 testes he gave in 6.5 min. How many pupils still haven't test? How long will it take techer to give tests to 43 students?
  8. Reduce to lowest terms
    fractions_16 Reduce to lowest terms : 32/124
  9. Two divided
    fractions14 Two divided by nine tenths.
  10. One third 2
    fractions One third of all students in class live in a house. If here are 42 students in a class, how many of them live in house?
  11. Fractions 4
    fractions_14 How many 2/3s are in 6?
  12. Scouts 4
    1957-4a 4/7 of the students in a school are boys. If 3/8 of the boys are scouts, how many scouts are there in a school of 1878 students?
  13. Pie
    pie_1 Vili ate three pieces of pie . If it piece is 1/8 how much pie did he eat?
  14. A store
    skateboard A store received a shipment of 240 skateboards. In three weeks, it sold 1/3 of those skateboards. How many skateboards did the store sell?
  15. Product of two fractions
    numbers_47 Product of two fractions is 9 3/5 . If one of the fraction is 9 3/7. Find the other fraction.
  16. Farmers 2
    tomato On Wednesday the farmers at the Grant Farm picked 2 barrels of tomatoes. Thursday, the farmers picked 1/2 as many tomatoes as on Wednesday. How many barrels of tomatoes did the farmers pick on Thursday?
  17. Pizza 5
    pizza_8 You have 2/4 of a pizza and you want to share it equally between 2 people how much pizza does each person get?