Question

An electric car uses
up
four batteries
every 800 km. If the
batteries are sold in
a pack of 6, how
many packs are
needed to run the
car for 4000 km?​

Answer 1

Answer: is 4

• 4 batteries in 800 km.
• batteries are sold in a pack of 6 batteries.

• km uses by a car.

800×5

=4000 km

• batteries uses in 4000 km.

4×5

=20

• how many packs of batteries are needed to run the car for 4000 km

4

20÷5 5| 20|

=4 20

××

this is answer...

hope it helps....

Answer 2

Answer:

$4$ packs are required to run the car for $4000$ km.

Step-by-step explanation:

Here we use the unitary method to solve the given problem.

Given, The car required $4$ batteries for every $800$ km.

Therefore, the car required $1$  battery for

$=\frac{800}{4} \\=200km.$

If the car travel $4000km$.

Then, the number of batteries required

$=\frac{4000}{200}\\ =20$.

Now a pack contains $6$ batteries.

Therefore,  $4$ packs of batteries are required to travel  $4000km$.