Lorenzo has 4 packages of granola bars. Each package has 10 bars. He eats one bar from each package.

4 × 10 - 4 = 36 granola bars

Step-by-step explanation:

4 packages with 10 bars each means 40 bars (4 packages × 10 bars each = 40 bars total)

one bar from each package

there are 4 packages so if he eats only one from each then he eats 4 bars total

40 bars total - 4 bars he ate = 36 bars left over

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it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.