Question

total price of 35 two differents priced pens is Rs 60 if the price of 1cheap 1.5rupees and the cost of 1 expensive pen is Rs 2rupees. if so how expensive was purchased in total​

Answer 1

Step-by-step explanation:

let the number of cheap pens be x

the number of expensive pen be y

total number of pens is 35

x + y = 35

y = 35 - x

cost of 1 cheap pen = Rs. 1.5

cost of 1 expensive pen = Rs. 2

total cost of pens = 60

1.5x + 2y = 60

substitute y = 35 - x

1.5x + 2 (35 - x) = 60

1.5x + 70 - 2x = 60

1.5x - 2x = 60 - 70

-0.5x = -10

0.5x = 10

x = 10/0.5

x = 20

x + y = 35

20 + y = 35

y = 35 - 20

y = 15

therefore the number of cheap pens = 20

the number of expensive pen = 15

hope you get your answer