Answer

5.a) They sold 169 bottles and every bottle has 1,25$ sales price

so to calculate the total of money collected, we need to multiply 169 x 1,25$:

169 x 1,25 = 169 x 1 + 169 x 25/100

= 169 + 4225/100 = 169 + 42,25 = 211,25$

5.b) They sold 240 pizzas and every pizza has 1,5$ sales price

so to calculate the total of money collected, we need to multiply 240 x 1,5$:

240 x 1,5 = 240 x 1 + 240 x 1/2

= 240 + 120 = 360$