Question

Openstudy user L is level 70 and increases levels once in two days. Openstudy user P is level 1 and increases one and a half level every day. How many days will it take for OS user P to overtake OS user L?

Answer 1

It's you again -.-

Answer 2

hi again

Answer 3

lol P = Parth and L=Lgba you cheat xP

Answer 4

lol you catch on fast

Answer 5

it came from my book though

Answer 6

I'm better than you.. get it? B)

Answer 7

xD you guys are awesome. I love the competitive spirit xD

Answer 8

Lgba, you were 86 when I joined.

Answer 9

Yet, I caught you once in the race xP

Answer 10

Remember the horror on your face when I was ahead? lol

Answer 11

They'll catch up on 99(both)

Answer 12

lol you caught up when we were 99 :P

Answer 13

and this is a serious question

Answer 14

Yeah.. they can't catch up earlier than that

Answer 15

well assuming there are infinite levels?

Answer 16

3 levels every two days for P.
1 level every two days for L.

Answer 17

Let's assume they'll meet at \(x\). what will be the equation?

Answer 18

Not sure what to do now :P

Answer 19

@lgbasallote did you understand? can you solve now?

Answer 20

\( \color{Black}{\Rightarrow 3x = 70 + 0.5x }\)
Something like that?

Answer 21

\( \color{Black}{\Rightarrow 2.5x = 70 }\)

\( \color{Black}{\Rightarrow x = 28 }\)

28 days!

Answer 22

lol but it took me 40 days xP

Answer 23

@lgbasallote you there?

Answer 24

in 28 days P is lvl 42

Answer 25

So like 112 levels.

Answer 26

they dont meet in 28 days

Answer 27

Oh :/

Answer 28

then I suck at math lol

Answer 29

@mathslover help?

Answer 30

im half-afk so bear with me if i dont reply for a long time

Answer 31

\( \color{Black}{\Rightarrow 3x = 70 + 0.5x }\)

I'm trying to find the mistake :/

Answer 32

wait

Answer 33

1+2x=70+0.5x
????

Answer 34

explanation for equation?

Answer 35

One and a half. umm..

Answer 36

this is an even number in my book so no answer :(

Answer 37

oh, then
1+1.5x=70+0.5x

Answer 38

Oh yes.. forgot that 1

Answer 39

\( \color{Black}{\Rightarrow1.5x = 69 + 0.5x }\)

\( \color{Black}{\Rightarrow x = 69 }\)

lol why did I put that 3x lol

Answer 40

what's that 1 for?

Answer 41

I'm verified with the idiot stamp

Answer 42

I start at level 1,

Answer 43

Though, I reached 57 on the first day =)

Answer 44

lol this aint you boy...so explanation for equation?

Answer 45

yeah, I have a few accounts
the smartscore can go up much faster than the old system

Answer 46

parth do you want to explain it?

Answer 47

Yes.

Answer 48

Because I start at level 1 lolol

Answer 49

And 1.5x means my increase,

Answer 50

As lgba increases one in two days, it can be said that it's half per day

Answer 51

why +?

Answer 52

Lgba starts with 70, so that's the reason we have the 70

Answer 53

why +?

Answer 54

70 + your rate of increase, because your levels won't decrease lol

Answer 55

what is this formula o.O

Answer 56

70 is the initial value.

Answer 57

what's x? maybe it can make sense

Answer 58

\[\text{current level}=\text{starting level}+\text{rate level change}\times\text{time}\]

Answer 59

You're adding the rate of change in the initial value.
Similarly, my initial value is 1.

Answer 60

oh i see

Answer 61

now itamakes sens

Answer 62

x is the number of days

Answer 63

darnkeyboard

Answer 64

lol

Answer 65

that's what I meant :P^

Answer 66

We have the rate of change, so the variable would be the time.

Answer 67

i get it now thanks

Answer 68

yw, son

Answer 69

;p

Answer 70

A guy who knows calculus, but is confused in the algebra problem..

Answer 71

we all have heels...the world is round after all

Answer 72

Well of course Idk cal but I know algebra lol

Answer 73

semi-dyslexia and absent-mindedness persist no matter what you learn ;)

Answer 74

^ lgba that goes for you;p

Answer 75

my semi-dyslexia refuses to understand what that meant

Answer 76

there was a follow up question....suppose P stopped 10 days after he joined OS and remained at rest for 3 days how long will it take for them to equal now?

Answer 77

omg

Answer 78

blame the book

Answer 79

imnot making these questions

Answer 80

Y U NO KNOW ALGEBRA

Answer 81

coz i hate physics...and this is related to that

Answer 82

how do i set upthe equation?

Answer 83

Where's physics here

Answer 84

speed time and distane lol

Answer 85

First figure out what the level of lgba would be after 13 days, that'd be easy :D

Answer 86

76.5

Answer 87

Now set up the same equation

Answer 88

i see thanks

Answer 89

yw, son

Answer 90

70.5 days?

Answer 91

@.@