Question

John needs 13 bottles of water from the store. john can only carry 3 at a time. what's the minimum number of trips john needs to make to the store? 3 4 4 1/2 5 6

Answer 1

⇔ Let’s attempt to answer this question carefully.

⇔ John takes the First trip: gets 3 bottles and comes back.

⇔ Second trip: Now there are 10 bottles remaining. John again takes 3 bottles then comes back.

⇔ Third trip: Now 7 bottles remaining. John takes 3 and comes back.

⇔ Fourth trip: Now 4 bottles remaining. John takes 3 leaving 1 bottle and comes back.

⇔ Fifth trip: John now gets the last bottle and returns home.

⇔ Thus it takes 5 trips for John to carry 13 bottles home.

:)