Question

A hiker walks from one town to another.

On the first day she covers one fifth of the total distance.

The next day she covers a quarter of what is left.

The following day she covers two fifths of the remainder and on the fourth day half of the remaining distance.

She now has 25 miles left.

How many miles has she travelled?

Answer 1

The answer is 113.8889.

Answer 2

Let L be the total distance
On day 1, she walks L / 5
On day 2, she walks 4 L / 20
On day 3 she walks 12 L / 50
0n day 4 she walks 36 L/ 200
Now 36L /200 equals to 25
Then the total distance is 138,88 miles
But she travelled L/5 , 4L/20, 12L/50, 36L/200
By adding and trplacing the value of L, gives
113, 8 miles

Answer 3

d1=X
d2=x
d3=3X*2/5=6/5X
d4=[3X-6/5X]*1/2=9/10X
d5=9/10X=25
Total 5X=(25*10*5)/9= 138.89 miles

Answer 4

250 Miles is the total distance.

Answer 5

Let assume distance is x

First Three days -
x/5 + (1/4)*(4x/5) + (2/5)*(3x/5) = 10x/25+6x/25 = 16x/25 i.e. remaining 9x/25

fourth day - 9x/50

fifth day = 9x/50 = 25

x = 138.89 mile