Question

help with #16

Answer 1

may I help you with #14 instead?

Answer 2

Get the 1/5 of 135. Then do the same with the answers you will get.

Answer 3

@nincompoop :LMAO

Answer 4

LOL

Answer 5

okay then let me work on #14 since I think I can do that part… I will leave 16 for you :)

JAY KAY!

okay let us start this the tedious way:
185 x 0.15 = a
a x 0.15 = b
b x 0.15 = c
you get the idea right?

Answer 6

a response would be nice @evy15
or are you waiting for us to spoon-feed you the actual answer?

Answer 7

for the first one
just multiply 135 with 4/5 to get the second week
then multiply 135 with (4/5)^2 for the third week and so on
its like a geometric progression.
for the second one
the exponential form is a*(r)^(n-1)
where a = 135 and r = 4/5
for the third one .
a*(r)^(n-1)< 15
substituting the values and seeing the table from 1 we get that n= 11
so n -1 = 10
therefore in 10th week the time is less than 15 mins
for the last one.
n=20
there time taken is
135*(4/5)^(20-1)
= 2 mins (approx)

Answer 8

let us break this down one-by-one

first week you worked 135 minutes
and it says that each week that followed you decreased the time by 1/5
so let us do this
135 x 0.85 = 114.75 minutes in our second week (0.75 minutes means you have 45 mins, yes?)
here I used 0.85 instead of doing
135 x 0.15 = 20.25 then 135 - 20.25 = 114.75

now the third week, we start where we left off
114.75 x 0.85 = 97.5375 minutes (0.5375 means we have 30 something odd minutes, right?)

fourth week
97.5375 x 0.85 = 82.906875 minutes … and it follows the same pattern until you are on your 8th week

Answer 9

I like to teach the concept first before throwing in some formula @dhanamkoilraj

Answer 10

well thanks to both, i appreciate it

Answer 11

5/5 - 1/5
what is the definition of a fraction?
a part of a whole…

Answer 12

oh okay, thanks

Answer 13

lol @nincompoop