And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).
3 kgs of sugar added to 6 kgs of flour constitutes a total of 9 kgs of sweet. We need to find the quantity of sugar required for 60 kgs of sweet. Question: If a 60 ml of water contains 12% of chlorine, how much water must be added in order to create a 8% chlorine solution?
Solution: Let x ml of chlorine be present in water.
Question: In a certain room, there are 28 women and 21 men. What is the ratio of women to the total number of people?
Solution: Men : women = 21 : 28 = 3:4 Women : total number of people = 28 : 49 = 4 : 7 Question: In a group, the ratio of doctors to lawyers is 5:4.
Then, 12/100 = x/60 → x = 7.2 ml Therefore, 7.2 ml is present in 60 ml of water. So in order to get a 8% chlorine solution, we need to add 90-60 = 30 ml of water.
In order for this 7.2 ml to constitute 8% of the solution, we need to add extra water. Question: There is a 20 litres of a solution which has 20% of bleach.
Solution: Let the number of chocolates be 5x and the number of ice-cream cones be 8x. Therefore, number of ice-cream cones in the box = 8*6 = 48.
A lot of questions on ratio are solved by using proportion. If a : b = c : d, then a, b, c, d are said to be in proportion and written as a:b :: c:d or a/b = c/d.
If 60kgs of this sweet has to be prepared, how much sugar is required?
Solution: Let the quantity of sugar required be x kgs. Therefore, 20 kgs of sugar is required for 60 kgs of sweet.