Question

which is better buy : 5 bottle for 200 rs or 7 bottles for 420 rs​

Answer 1

Answer:

5 bottle for 200 rs

Step-by-step explination

Because 5 bottle for 200 rs means 1 bottle cost = 200/5=40

and 7 bottles for 420 rs means 1 bottle cost = 420/7=60

Answer 2

Given: The cost of $5$bottles is $200$Rs. and the cost of 7bottles is $420$Rs.

We have to find which cost of a bottle is better to buy.

For this first, we will find the cost of each bottle worth $200$Rs.and $420$Rs.

We are solving in the following way:

We have,

The cost of $5$bottles is $200$Rs. and the cost of 7bottles is $420$Rs.

Now,

The cost of the bottle is worth $200$Rs. will be:

$=>\frac{200}{5} \\\\=>40$Rs.

And the cost of the bottle is worth $420$Rs. will be:

$=>\frac{420}{7} \\\\=>60$Rs.

We can see that $5$bottles for $200$Rs. are better to buy.

Hence,  $5$bottles for $200$Rs. are better to buy.