Question

The total cost of a packet of biscuits and toffee is Rs.22 If the cost 3 biscuits is Rs.14 more than the cost of toffee, find the cost of a box and a pen

Answer 1

Cost of 1 packet of biscuit=Rs 9

Cost of 1 packet of toffee=Rs 13

Explanation:

Let

Cost of 1 packet of biscuit=x

Cost of 1 packet of toffee=y

We have to find the cost of 1 packet of biscuit and 1 packet of toffee.

According to question

`3x=14+y`

`y=3x-14`

Now,

`x+y=22`

Using the value of y then, we get

`x+3x-14=22`

`4x=22+14`

`4x=36`

`x=(36)/(4)=9`

Substitute the value of x

`y=3(9)-14=27-14`

`y=13`

Hence, cost of 1 packet of biscuit=Rs 9

Cost of 1 packet of toffee=Rs 13