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?
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:
There were pears in the basket. I took them two fifths and left them in a basket of six. How many pears I took?
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 of the trees in the orchard are apples, 1/3 are cherries and the remaining five trees are pear. How many trees are in the orchard?
- 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
One-eighth of 9th class was interested in studying at a grammar school, at a business academy one sixth, at secondary vocational schools quarter, to SOU one third and the remaining three students were interested in the school of art direction. How many st
- Grandmother and grandfather
Grandmother baked cakes. Grandfather ate half, then quarter of the rest ate Peter and Paul ate half of rest. For parents left 6 cakes. How many cakes maked the grandmother?
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?
Amy bought a basket of fruits 1/5 of them were apples,1/4 were oranges, and the rest were 33 bananas. How many fruits did she buy in all?
- Unknown number
I think the number - its sixth is 3 smaller than its third.
Solve equation with fractions: 2x/3-50=40+x/4
- Simple equation 3
24 = n • 27, solve for n
Three-quarters of an unknown number are 4/5. What is 5/6 of this unknown number?
- Unknown number
I think the number. I'll reduce it to its one-third. The result is then increased by one-third, and I get the number 12.
- Unknown number 6
Determine the unknown number, which is by 1.5 greater than its fourth.
- Equation with x
Solve the following equation: 2x- (8x + 1) - (x + 2) / 5 = 9
Given 2x =0.125 find the value of x
- Simple equation
Solve for x: 3(x + 2) = x - 18