Question

There are 6 rows with 18 chairs in each row. In the center of the chairs, 4 rows of 6 chairs are brown. The rest of the chairs are blue. How many chairs are blue?

Answer 1

multiply 18 ×6 then multiply 4×6 then take the answer of 4×6 and take it away from 18×6

Answer 2

There are 84 blue chairs.

Explanation:

There are 6 rows with 18 chairs in each row.

So, total number of chairs =
`6* 18=108`

In the centre of the chairs, 4 rows of 6 chairs are brown.

So, number of brown chairs =
`4* 6=24`

The rest of the chairs are blue.

Hence, subtracting number of brown chairs from total number of chairs will give the number of blue chairs.

So, number of blue chairs =
`108-24=84`