SOLUTION TO LAST MONTH'S QUIZ
1) 21 p
2) £11
3) Neither. The volume of water in the wineglass
and wine in the waterjug are the same.
Notes
1). If an orange costs R pence and a lemon costs L pence,
2R + 3L = 119
and R = L + 7
Solving, R = 28, L = 21
2). A + B = 29
B + C = 40
C + D = 65
2A  D = 0
Solving, A = 18, B = 11, C = 29, D = 36
3). Since the wineglass and the waterjug each contain the
same volume of fluid as they did originally, the volume
transferred one way must equal the the volume
transferred the other way. (In fact each is 10/11 cl.)
