Question

The total cost of a pen and a ruler is Rs. 50, if the cost of three pens is same as the cost of 7 rule, find the cost of a box and a pen.​

Answer 1

Answer:

57

Step-by-step explanation:

Answer 2

Answer:

pen = ₹35 and ruler = ₹15

Step-by-step explanation:

let pen be x and ruler be y

x+y = 50

3x = 7y

x= 7y/3

put value of x in x+y = 50

7y/3 + y = 50

10y/3 = 50

y = 15

x = 35