I don't know if this will be correct, but let me explain what I think, so a day has 24 hours so multiply 10 * 24 and your answer should be 240.
Answer:
(20.) D is the correct answer
(19.) A is correct
(18.) A is correct
(17.) D is correct
(15.) A is correct
Step-by-step explanation:
hope this helps u ;)
P = 2 x ( W+L)
P = 2 x (W + 2W)
p = 2 x 3W
P = 2 x 3(20/3) =40