To solve this problem, we first need to find the weights of A, B, and C.

1. We know that the average weight of A, B, and C is 50 kgs. This means that the total weight of A, B, and C is 50 kgs * 3 = 150 kgs.

2. We also know that B's weight is 20 kgs less than A's weight and 5 kgs more than C's weight. Let's denote A's weight as a, B's weight as b, and C's weight as c. We can write two equations based on this information:

a = b + 20
c = b - 5

3. We can substitute these equations into the equation for the total weight:

a + b + c = 150
(b + 20) + b + (b - 5) = 150
3b + 15 = 150
3b = 135
b = 45 kgs

4. Now we can find A's and C's weights:

a = b + 20 = 45 + 20 = 65 kgs
c = b - 5 = 45 - 5 = 40 kgs

5. We know that D weighs 2 kgs more than C, so D's weight is 40 + 2 = 42 kgs.

6. Finally, we can find the average weight of A, B, C, and D:

(a + b + c + d) / 4 = (65 + 45 + 40 + 42) / 4 = 192 / 4 = 48 kgs

So, the correct answer is 48 kgs.

Question

To solve this problem, we first need to find the weights of A, B, and C.

1. We know that the average weight of A, B, and C is 50 kgs. This means that the total weight of A, B, and C is 50 kgs * 3 = 150 kgs.

2. We also know that B's weight is 20 kgs less than A's weight and 5 kgs more than C's weight. Let's denote A's weight as a, B's weight as b, and C's weight as c. We can write two equations based on this information:

a = b + 20
   c = b - 5

3. We can substitute these equations into the equation for the total weight:

a + b + c = 150
   (b + 20) + b + (b - 5) = 150
   3b + 15 = 150
   3b = 135
   b = 45 kgs

4. Now we can find A's and C's weights:

a = b + 20 = 45 + 20 = 65 kgs
   c = b - 5 = 45 - 5 = 40 kgs

5. We know that D weighs 2 kgs more than C, so D's weight is 40 + 2 = 42 kgs.

6. Finally, we can find the average weight of A, B, C, and D:

(a + b + c + d) / 4 = (65 + 45 + 40 + 42) / 4 = 192 / 4 = 48 kgs

So, the correct answer is 48 kgs.

Knowee AI · Accepted Answer