# Calculate delivery time

**Question**

I can deliver 42 bats in 1 hour. Write an expression that shows how long it takes to deliver 126 bats.

**Answer**

**STEP 1: ** We are given the number of bats that can be delivered in 1 hour. We need to find the time taken to deliver 126 bats. Assume a variable for the time taken to deliver 126 bats, say,

*t*. We can calculate

*t* by dividing the number of bats delivered in

*t* hours by the number of bats delivered in 1 hour.

An expression that shows the time taken to deliver 126 bats is: