In a truck of red and green peppers the ratio of red peppers to green peppers is 3:4.if the truck contains 120 green peppers,how many red peppers are there?
total is x of red and green
120 = 4/7x
120(7) = 7(4/7x)
840 = 4x
x = 210
red = total - green
red = 210 - 120
red = 90
Pls teach me grade 8 maths
since the ratio is constant,
3/4 = x/120
3/4 = x/120
Cross multiply and solve for x.
4x = 360
x = 90
To find the number of red peppers in the truck, we first need to understand the ratio between red and green peppers. The given ratio is 3:4, which means that for every 3 red peppers, there are 4 green peppers.
Since we know that there are 120 green peppers in the truck, we can set up a proportion to find the number of red peppers. Let's assign the unknown number of red peppers as "x".
Given:
Green Peppers = 120
Red peppers : Green peppers = 3:4
Therefore, we can set up the following proportion:
Red peppers / Green peppers = 3/4
Substituting the given values:
x / 120 = 3 / 4
To solve for x, we can cross-multiply:
4x = 3 * 120
Simplifying:
4x = 360
Now, divide both sides by 4 to isolate x:
x = 360 / 4
Simplifying further:
x = 90
Therefore, there are 90 red peppers in the truck.