A rope is 30 meters long. Two fifths of the rope is used for the first time, and one sixth of the rope is used for the second time. What is the length of the rope left? How many meters are left

A rope is 30 meters long. Two fifths of the rope is used for the first time, and one sixth of the rope is used for the second time. What is the length of the rope left? How many meters are left

3/5x5/6=1/2

What's the difference between 4 out of 7 minus 2 out of 21 minus 2 out of 3 and 3 out of 7

4/7-2/21=12/21-2/21=10/21
2/3-3/7=14/21-9/21=5/21
10/21-5/21=5/21

Solving the equation, x minus 11 out of 13 minus 2 out of 13 equals 1 out of 3 oil

One and two thirds

What is 11 out of 20 minus 1 out of 5

Solution
11 / 20-1 / 5
=11 / 20-4 / 20
=7 out of 20

A number minus one eleventh of it equals five. What's the number

A number minus one eleventh of it equals five. This number is (5.5)
5÷（1-1/11）
=5÷10/11
=5.5
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What's 10 minus 11 and 1 / 5

It's one and a half of a minus, - 6 / 5

How much is 1 / 5 minus 1 / 11?

6/55

How much is eleven thirds minus five

11-5 out of 3
=11 / 3-15 / 3
=-4 / 3
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There are 930 students in grade 4.5.6 in a certain school. Three out of five students in grade 4 is equal to two out of three students in Grade 5. How many students are there in each of the three years

Yfabcd123, the ratio of the number of students in grade 4 and grade 5 is: 2 / 3:3 / 5 = 10:9, the ratio of students in grade 4 and grade 6 is: 1-1 / 6: 1 = 5:6 = 10:12, the ratio of students in grade 4 and grade 6 is: 10:9:12, the ratio of students in grade 4 is: 930 × 10 / (10 + 9 + 12) = 300, the ratio of students in Grade 5 is: 930 × 9 / (10 + 9 + 12) = 270

The ratio of boys to girls in a class is 5:4, and girls are 6 less than boys. How many students are there in the class?
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X-Y = 6, X / y = 5 / 4, x = 30, y = 24, 30 + 24 = 54