How many 2 digit decimals are there between 1.63 and 1.68 and 1 digit decimals between 0.5 and 1.8

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?