If 6 smarties and 5 jujubes cost 40 cents while 3 smarties and 2 jujubes cost 19 cents - how much are each on separately.
6S + 5J = 40 (1)
3S + 2J = 19 multiply through by -2 ⇒ -6S - 4J = -38 (2)
Add (1) and (2)
J = 2 (cents)
And
3S + 2(2) = 19
3S + 4 =19
3S =15
S = 5 (cents)
