Excavation

Mr. Billy calculated that excavation for a water connection dig for 12 days. His friend would take 10 days. Billy worked 3 days alone. Then his friend came to help and started on the other end.

On what day since the beginning of excavation they met?

Correct result:

n =  8

Solution:

312+n312+n310=1  n=3+(1312)121012+108

3 / 12 +(n-3)/12 + (n-3)/10 = 1

11n = 78

n = 7811 ≈ 7.090909

Calculated by our simple equation calculator.



We would be very happy if you find an error in the example, spelling mistakes, or inaccuracies, and please send it to us. We thank you!






Showing 0 comments:
avatar




Tips to related online calculators
Check out our ratio calculator.
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?
Do you want to round the number?
Do you want to convert time units like minutes to seconds?

Next similar math problems:

  • Telco company
    phones The upstairs communications company offers customers a special long distance calling rate that includes a $0.10 per minute charge. Which of the following represents this fee scheduale where m represents the number of minutes and c is the overall cost of t
  • Dinesh
    cookies Dinesh ate 3 cookies, each with mass 1.45 g. What was the total mass of the cookies that he ate?
  • Suriani
    meter Suriani had 3.05 m of ribbon. She used up 0.76 m of it. What is the length of ribbon that she has left?
  • Zhiwei
    flasa Zhiwei wants to divide 19 litres of water equally into 6 pots. Find the volume of water in each pot?
  • Cargo space
    truck_1 The cargo space of the truck has the dimensions a = 4.2 m, b = 1.9 m, c = 8.1 dm. Calculate its volume.
  • The temperature 9
    teplomer_1 The temperature at 9 a. M. is 2 degrees. The temperature rises 3 more degrees by noon. Which expression describes the temperature at noon? Calculate the new temperature value.
  • Calculate
    hexagon-prism Calculate the surface of a regular eleven-sided prism, if the content of its base is 58cm2, the edge of the base is 6cm long, the height of the prism is 21cm
  • Temperature rise and fall
    teplomer_2 On Friday, the temperature was 82°F. The temperature changed by –2°F on Saturday, and then it changed by 5°F on Sunday. What was the temperature on Sunday? How did the temperature change? Note we consider the mathematical problem formulated in this way to
  • Into box
    cubes3_1 How many cubes with an edge of 2.5 cm fit into a box measuring 11.6 cm; 8.9 cm and 13.75 cm?
  • Jagdeep
    paper Jagdeep had a strip of paper measuring 1.8 m. He cut it into 4 equal strips. How long is each shorter strip of paper?
  • Angie
    milk Angie poured 4 cartons of milk, each with 2.4 litres, into a mixing bowl. How many litres of milk were there altogether?
  • Andy had
    mince_5 Andy had $5.95 in his pocket. His father gave him another $3.55. How much does Andy have altogether now?
  • Jansen
    flasa_1 Jansen had 1.3 litres of fruit juice. He drank 0.5 litres during lunch. How many litres of fruit juice does he have left?
  • Celsius 2
    teplomer_1 5 degrees Celsius at midday dropped 12°Celsius degree by evening. What is the temperature?
  • Find the mean
    mean_normal Find the number between 13 and 29.
  • Divisible by nine
    numbers_2 How many three-digit natural numbers in total are divisible without a remainder by the number 9?
  • Convalescent homes
    hotel-montfort-tatry-2 In 270 convalescent homes, 94,270 vacationers spent part of the holiday a year. On average, how many vacationers per convalescent home?