# How many biscuits had it eaten on the first day?

+1 vote
122 views

Gauri's puppy was growing fast. In the first five days since she got it it had eaten 100 dog biscuits. If each day it had eaten 6 more than the previous day .
How many biscuits had it eaten on the first day?

posted May 22, 2014

Let a be the # of Biscuits eaten 1st day.

So.

``````a + (a+6) + (a+6+6) + (a+6+6+6) + (a+6+6+6+6) = 100
5a + 60 = 100
``````

Thus,

``````a =  8 Biscuits.
``````

+1 vote

....................8...............

Similar Puzzles
+1 vote

Arun had some money. he gave one rupee to beggar and half of the remaining money was spent for buy food. Same thing happened second day he gave one rupee to beggar from remaining money of first day. this continued on the six day he had 0 rupee, then how much money he had on first day?

+1 vote

He gave one rupee to beggar and half of the remaining money was spent for buy something.
Same thing happened second day he gave one rupee to beggar from remaining money of first day.
This continued on till the sixth day when he had 0 rupee after giving 1 rupee to beggar,
Then how much money he had on first day?

A cyclist rides from one point to another over five days.

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

The next day she covers one 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.

The cyclist now has 25 miles left.

How many miles has she travelled?

A cycling group are on a five day ride for charity.

On the first day they cover one third of the total distance, the next day they cover one third of what is left, the following day they cover one quarter of the remainder and on the fourth day they cover half of the remaining distance.

The group now have 15 miles left to cycle.

How many miles have they travelled?