Question

Using a truck, Mr. Salazar needs to haul (4.2 tons) of gravel from a quarry to his house. His truck can hau (3/5 tons) of gravel at one time. What is the least number of trips Mr. Salazar will need to make from the quarry to his house?
A.7
B.8
C.6
D.12​

Answer 1

4.2 is also equal to 42/10 which is equal to 21/5. In order to find how many trips you will be dividing fractions (21/5) / (3/5). Although this may seems difficult, because the denominators are the same, it simplifies to 21/3 which is equal to 7 (A)