Question

3 bags and 4 pens together costs rs 257 whereas 4 bags and 3 pens together costs rs 324 and find the total cost of 1 bag and 10 pens

Answer 1

there fore,cost of 1 bag is 75 rs. & cost of 10 pens is 80 rs.

Answer 2

Answer:

The total cost of 1 bag and 10 pens is Rs.155

Step-by-step explanation:

The 3 bags + 4 pens costs = 257 rupees__________________________________ 1

The 4 bags + 3 pens costs = 324 rupees__________________________________ 2

To find the total cost of each bag and pen we use,

Let’s Bags = b and Pens = p  

$\begin{array}{l}{4 b+3 p=324} \\ {3 b+4 p=257}\end{array}$

$\begin{array}{l}{\text { 3. }(4 b+3 p=324)} \\ {4 .(3 b+4 p=257)}\end{array}$

Subtracting 1 from 2, we get

7p=56

P = 8

Putting p = 8 in equation 1 we get b = 75

The cost of 1 bag and 10 pens

(1 x 75) + (10 x 8)  

75 + 80

Rs. 155 is the total cost of 1 bag and 10 pens.