Answer:
3 seconds
Step-by-step explanation:
It's quite simple. First, add 5cm to the progress of the insect, counting it as 1 second. Then subtract 2cm because it falls over the next second, thus taking another second. Then finally, plus 5cm, making it 3 seconds. It's not 4 seconds because at 3 seconds it had already reached the top.
If I didn't clear everything or messed up, please comment.
Answer: Option B
Step-by-step explanation: Doing the test, saw another post with the answer
÷ 
First, let's turn the first fraction into an improper fraction.
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Since both of these fractions share the same denominator, we can drop the denominator and simply divide the numerators.
16 ÷ 4 = 4
The quotient = 4
