Hellen has 10 sweets, shelly has 30 sweets. Faith has 4 fewer sweets than the average number of sweets that hellen, shelly and faith have. How many sweets do they have altogether

The sum of all the sweets is 54 sweets

Step-by-step explanation:

Here, we want to calculate the number of sweets the three have altogether.

Let the number of sweet Faith has be x

Mathematically;

Faith has 4 sweets fewer than the average number of sweets

The average is the sum of all the sweets divided by 3

The average will be (10 + 30 + x) / 3

Thus;

(10 + 30 + x) / 3 - 4 = x

(40 + x) / 3 = x + 4

40 + x = 3 (x + 4)

40 + x = 3x + 12

40-12 = 3x - x

28 = 2x

x = 28/2

x = 14 sweets

So the sum of all the sweets would be 10 + 30 + 14 = 54 sweets