Jack + Andy + Kim = 37 J + (J+2) + (3J) = 37 5J + 2 = 37 5J = 37 - 2 = 35 ====> J = = 7. Answer. J = 7, A = 7+2 = 9, K = 3*J = 3*7 = 21. Check. J + A + K = 7 + 9 + 21 = 37. ! Correct !