Correct option is C
Given:
H has three times as many cards as R.
If H gives 50 cards to R, R will have three times as many cards as H.
Solution:
Let the number of cards R has be x. Then the number of cards H has is 3x.
After H gives 50 cards to R, H will have 3x - 50 cards, and R will have x + 50 cards.
The second condition states that after the transfer, R will have three times as many cards as H:
x + 50 = 3(3x - 50)
x + 50 = 9x - 150
50 + 150 = 9x - x
200 = 8x
x = 25
So, R has x = 25 cards. Since H has three times as many cards as R, H has:
3x = 3 × 25 = 75
H has 75 cards.