Four friends contribute sums of money to a charitable organization in the ratio of 2:4:5:7. if the largest amount contributed is $1.40, calculate the total amount contributed used by the four people?
7x = 1.40
x = .20
2x = 0.40
4x = 0.80
5x = 1.00
7x = 1.40
sum = $3.60
where you get the 20 for x
v. good
Where do u get 20x
where you get that 20 from
To solve this problem, we need to find the total sum of money contributed by the four friends.
Given that the ratio of the amounts contributed is 2:4:5:7, we can assign variables to represent the amounts contributed by each friend. Let's call these variables a, b, c, and d, respectively.
According to the given information, the largest amount contributed is $1.40, which corresponds to 7 units in the ratio. Therefore, we can set up the following equation:
7 units = $1.40
To find the value of one unit, we can divide both sides of the equation by 7:
1 unit = $1.40 / 7
= $0.20
Now that we know the value of one unit, we can determine the amounts contributed by each friend by multiplying the unit value by the corresponding ratio:
Friend 1: a = 2 units = 2 * $0.20 = $0.40
Friend 2: b = 4 units = 4 * $0.20 = $0.80
Friend 3: c = 5 units = 5 * $0.20 = $1.00
Friend 4: d = 7 units = 7 * $0.20 = $1.40
To find the total amount contributed by the four friends, we add up their individual contributions:
Total = a + b + c + d
= $0.40 + $0.80 + $1.00 + $1.40
= $3.60
Therefore, the total amount contributed by the four friends is $3.60.