Question

The price of 3 notebooks and 8 pens is 100, the price of 2 notebooks and t pens is 65 what is the price the notebooks

Answer 1

Answer:

The cost of book is 20rs each &the cost of pen is 5rs each

Step-by-step explanation:

1] 3x+8y=100

2] 2x+5y=65

multiply 2 for equation 1 & 3 for equation 2

2(3x+8y)=2(100)

3(2x+5y)=3(65)

which forms

6x+16y=200-1️⃣

6x+15y=195-2️⃣

substrate the above equations

1y=5

substitute 5in the place of y

3x+8y=100

3x+8(5)=100

3x+40=100

3x=100-40

3x=60

x=60/3

x=20