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

Answer:

Cost of 1 packet of biscuit=Rs 9

Cost of 1 packet of toffee=Rs 13

Step-by-step 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

$x+3x-14=22$

$4x=22+14$

$4x=36$

$x=\frac{36}{4}=9$

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