Unit 8 · Rates and Ratios
Omid's Blocks — What Is the Final Level?
Lesson 3 of 7
About this lesson
2 identical blocks raise a jug from 100 mL to 150 mL — a rise of 50 mL total, so 25 mL per block. 5 more blocks add 5×25=125 mL. New level = 150+125 = 275 mL. Option A (225 mL) traps students who add 125 mL to the original 100 mL instead of the current 150 mL.
Chapters
Question
Omid has a 1 litre measuring jug. It contains 100 mL of water.
He has some identical blocks. He drops two blocks into the water and they sink. The water level rises to 150 mL.
Omid drops five more blocks into the water.
What is the new water level?
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