We first need to figure out how much the syrup costs per ounce. To find this we divide 3.8 by 25.4.
3.8/25.4 = .15
Therefore, it costs 15 cents per ounce of syrup.
One pump is equal to about 1 ounce of syrup.
15 x 5 = 75
Therefore, it costs 75 cents for 5 pumps of syrup.