Proportional Relationship and Percentages

Priya has a recipe for banana bread. She uses 7 1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour. Which of these equations represents the relationship between b and f?

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of these is closest to the percent error for Diego’s measurement?

How long is the truck?

The new bottle of sanitizer has 87.5 ounces. This is how many PERCENT OF THE ORIGINAL?

The graph shows how the number of pages Jeff reads is related to the number of hours he spends reading.

If Jeff continues to read at the same rate as shown in the graph, how many hours would it take him to read 90 pages?

Imagine you found a treasure chest, but it's locked with a numerical puzzle. If solving 3/5 of the puzzle gives you 18, can you figure out the total value of the puzzle to unlock the treasure?