Step-by-step explanation:
divide the original prices by 100 them multiply it by 60
motorized train : 9.99 ÷ 100 × 60 = 5.9 ➡$6
doll house : 12.99 ÷ 100 × 60 = 7.794 ➡$7.8
building blocks : 5.69 ÷ 100 × 60 = 3.414 ➡$3.4
