Answer the following questions. Raju is junk seller. He sells many things. Here is given the list of junk.
Kind of Junk Price of 1 kg
News paper Rs. 5
Iron Rs. 10
Brass Rs 50
Plastic Rs 8

1). How much money will you pay to Raju for 20 kg of newspapers?
2). What is the cost of 5 kg iron?
3). What is the cost of 9 kg plastic ?
4). What is the cost of 7 kg brass?

cost of 5kg iron is as follow = 50 rs

1 ) RS 100

2 ) RS 50

3 ) RS 72

4 ) RS 350

Step-by-step explanation:

1 )

Cost of 1 kg of newspaper = RS 5.

Cost of 20 kg of newspaper

= 20 x 5

= RS 100

2 )

Cost of for 1 kg of iron = RS 10

Cost of for 5 kg of iron

= 5 x 10

= RS 50

3 )

Cost of 1 kg of Plastic = RS 8

Cost of 9 kg of Plastic

= 9 x 8

= RS 72

4 )

Cost of 1 kg of Brass = RS 50

Cost of 7 kg of Brass

= 7 x 50

= RS 350

if x = 1, then the answer is 3.5