If Kamal gives 20 marbles to Shuvo, then, both of them will have equal numbers of marbles in their possessions. If Shuvo gives 40 marbles to Kamal Ethen Kamal will have twice the number of marbles that Shuvo will retain. What iwis the number of marbles that Kamal has?
Answer: C) 200
- A) 100
- B) 160
- C) 200
- D) None of these
Explanation
C) 200. Let Kamal have x and Shuvo y. Equal after Kamal gives 20: x − 20 = y + 20, so x = y + 40. After Shuvo gives 40: x + 40 = 2(y − 40), so x = 2y − 120. Then y + 40 = 2y − 120, giving y = 160 and x = 200. Check: Kamal would hold 240, twice Shuvo's 120.
Asked in: BGDCL 2017
Topic: Algebra