At a riverside camp, Emek and Luna prepared supply boats for the trip downstream. The first boat could carry 27 boxes, the second 23, and the third 19. Luna noticed that each boat carried 4 fewer boxes as the river became narrower. Emek continued the pattern and predicted that the next two boats could carry 15 and 11 boxes. They packed each boat to match its safe load, and all the supplies traveled down the narrowing river safely.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
Compare each boat's load with the load of the boat before it.
The boat loads are 27, 23, 19, 15, 11. Which rule describes the pattern?
Add 4 each timeSubtract 3 each timeSubtract 4 each timeSubtract 5 each timeCorrect! Each boat carries 4 fewer boxes than the one before it.
Try again. Check the change from 27 to 23 and from 23 to 19.
Next🎉 Congrats! You got this question!
Hint
Take away the same number of boxes as before.
If the same pattern continues after the boat that carries 11 boxes, how many boxes could the next boat safely carry?
Correct! The next boat could carry 7 boxes.
Try again. Subtract 4 from 11.
Next🎉 Congrats! You got this question!
Hint
Look for the boat whose load becomes 15 after subtracting 4.
Emek sees a boat that can carry 15 boxes. Which earlier boat helps him check that 15 fits the pattern?
A boat carrying 19 boxes, because 19 - 4 = 15A boat carrying 23 boxes, because 23 - 4 = 15A boat carrying 27 boxes, because 27 - 4 = 15A boat carrying 11 boxes, because 11 - 4 = 15Correct! The load drops from 19 boxes to 15 boxes by subtracting 4.
Try again. Find the number that is 4 more than 15.
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🎉 Congrats! You finished this challenge set!
