Question

The cost of 1 pen is Rs 16 and the cost of 1 pencil is Rs 5 . what is total cost of x pencil and y pencil

Answer 1

cost of one pen =16
cost of one pencil =5
cost of x pencil =!
cost of y pencil =!
x pencil =16 +5
=21
y pencil =16-5
=11

Therefore x pencil =21, y pencil =11

hope this helps you

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Answer 2

Answer: total cost = 16*x + 5*y

Step-by-step explanation:  

cost of 1 pen =  ₹ 16

cost of 1 pencil = ₹ 5

∴cost of x pens = ₹  16x

∴cost of y pencils = ₹ 5y

∴total cost = 16x + 5y