A pen costs 20 and a pencil costs 10. How can the total cost of a bag that contains some pens and some pencils be found? What is the total cost of the bag if there are 3 pens and 4 pencils?
Answers
Answer:
Solution = Rs 100
Step-by-step explanation:
Given -
Cost of One pen = Rs20
Cost of One pencil = Rs 10
Therefore, Cost of 3 pens = 3 x 20 = Rs60
&
Cost of 4 pencils = 4 x 10 = Rs40
(On adding both)
Rs(60+40) = Rs100
Answer: Rs 100
Step-by-step explanation:
Given: cost of pen= Rs 20
cost of pencil= Rs 10
To find: cost of a bag with 3 pens and 4 pencils
Solution:
1. If the number of pens and pencils in the bag is given, we can find the individual costs and add them up to find the cost of the bag.
2. The given number of pens and pencils are 3 and 4 respectively.
cost of 3 pens= 3*cost of 1 pen
=3*20
= Rs 60
cost of 4 pencils=4*cost of 1 pencil
=4*10
=Rs 40
Therfore, cost of the bag is the total cost of pens and pencils.
that is, 60+40=100
Hence, cost of the bag is Rs 100