Answer:
£1.31
Step-by-step explanation:
Add 5 to 3, obtaining 8. Then the amt tht Eric pays is 5/8 of the £3.50 total, and the amt tht Sue pays is 3/8 of the total.
Thus, mult. £3.50 by 3/8:
(3/8)(£3.50) = £1.31 (which has been rounded off from £1.3125).
