Question

jane loves animals. She has an equal number of beetles, birds and spiders as pets. Apart from human legs, there is a total of 270 legs in the house. How many spiders does Jane have if a spider has 8 legs and a beetle has 6 legs?

Answer 1

16.875 spiders

Explanation:

Given

Let

`B = Beetles`

`C = Birds`

`S = Spiders`

So, we have:

`B = C = S` --- equal amounts

`6B + 2C + 8S = 270` --- the legs

Required

The number of spider

Since she has an equal amount of B, C and S;

The expression can be written as:

`6B + 2C + 8S = 270`

`6S + 2S + 8S = 270`

`16S = 270`

Solve for S

`S = (270)/(16)`

`S = 16.875`

The result of the solution does not represent real life situation because it it is not possible to have a fraction number of spider