8 bricklayers build a house for 630 days. How many bricklayers have to add after 150 days, so then the whole building completed in (next) 320 days?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- The buns
Kate, Zofia and Peter Liked buns. Even today, their grandmother prepare their favorite meal. Katka eats 4 bunches, Žofia 3 and Petra eats 5 buns. Their grandmother said to them, "My inmate will you know how many buns I have been make today, if those you ea
- Cleaning windows
Cleaning company has to wash all the windows of the school. The first day washes one-sixth of the windows of the school, the next day three more windows than the first day and the remaining 18 windows washes on the third day. Calculate how many windows ha
There were pears in the basket. I took them two fifths and left them in a basket of six. How many pears I took?
- Boys and girls
There are 28 girls in the hall. 5/7 of all children are boys. How many children and how many boys are there?
- King's birthday
To celebrate the king's birthday workers fire 1/5 all purchased rockets. To celebrate the Queen's birthday fire 1/6 of the remaining rockets and to celebrate the birthday of king's son remaining 15,000 rockets. How many rockets they purchased?
From the total number of trees in the orchard, there are two-fifths pearls and apples are three eighty. The rest of the trees are 9 ceremonial. How many trees are in the set?
3/5 trees are apples, cherries are 1/3. 5 trees are pear. How many is the total number of trees?
- Simple equation
Solve for x: 3(x + 2) = x - 18
- Unknown number
I think the number - its sixth is 3 smaller than its third.
Grandfather, father, and son are carpenters. They decided to make a wardrobe. Father produces it for 12 hours, his son for 15 hours, and grandfather for 10 hours. How long will they make it together?
- Unknown number 6
Determine x if 1/6 of x is equal to 2/5 of the number 24.
Solve equation and check the result: 1.4x - 3/2 + x - 9,8 = x + 0,4/3 - 7 + 1,6/6
Find x: x + 1/2 = 1/3
- Equation with x
Solve the following equation: 2x- (8x + 1) - (x + 2) / 5 = 9
- Equation with fractions
Solve equation: ? It is equation with fractions.
I think the number. If I add to its third seven I get same as when to its quarter add 8. Which is the number?
Three-quarters of an unknown number are 4/5. What is 5/6 of this unknown number?