how do ratios work

ratios are just fractions not written in fraction form, for example 8:9 ratio just means the first value is 8/(8+9) and the second value is 9/(8+9)if a question says that in a ratio of green apples to red apples 7:2, there are 16 red apples,it just means that 16 = 2/(7+9) which is 16 = 2/9the easiest way i find is to find the value of 1/9, which would be 8and then using the value of 1/9 u can find how much green apples there are, whichi is 8x7=56

MS

Related Maths GCSE answers

All answers ▸

The diagram shows a garden in the shape of a rectangle. All measurements are in metres. The length of the rectangle: 4+3x and the width of the rectangle: x+6. The perimeter of the garden is 32 metres. Work out the value of x


ABCD is a regular paralleogram, A=(2,1) B=(7,2) and C=(4,6), work out the gradient of the line CD and then work out the area of ABCD.


There are 420 balls in a ball pool. There is a combination of violet, blue, yellow and green balls. 2/7 are violet, 35% are blue and the ratio of yellow to green is 4:5. How many of each colour ball is there in the ball pool?


Solve the simultaneous equations: 3x + y =11; 2x + y = 8