Question

Compare the number of Facebook friends at the beginning of a month and at the end of that month, if …
a) it increased by 25% and then decreased by 40%
b) it decreased by 60% and then increased by 80%
c) it increased by 5% and then increased by 20%
d) it decreased by 10% and then decreased by 30%

Answer 1

I will do the first, you do the rest in the same way

suppose you have x friends
after increase of 25% you have 1.25x
after decrease of 40% you are left with (.6)(1.25x) = .75x
effective change: decrease of 25%
(test it with some actual numbers)

Answer 2

a) 1.25 * 0.60 = 0.75 so, down by 25%
and so on

Answer 3

poops

Answer 4

Plz answer all of them
I dont think thats right

Answer 5

It is a greater or less than problem.

Answer 6

It’s _______ because, if you use a 100 as an example (it’s the easiest), then 100 decreased by 60% is 40. And then we increase 40 by 80% Which is 32. 40>32. So by that means, it’s greater than. >