Question

3. A box containing 10 pencils costs 22.
How much
would 7 such boxes of 10 pencils each cost?​

Answer 1

Answer:

Given total cost of 5 pens and 10 pencil = Rs 30

5 pens + 10 pencils = 30

pens + 2 pencils = 1

also given pen cost 3 more than a pencil

i.e, pen = 3 + pencil.

pen - pencil = 3

pens + 2 pencils = 6

_______________

-3 pencils = -3

pencils = 1

pen - 1 = 3

pen = 4

cost of pencils = 1 cost of pen = 4

Answer 2

Answer is 154
10 pencil = 1 box
So,
1 box = 22₹ then,
7 boxes = 22*7 = 154₹