Question

N spam, a detailed step by step explanation would be great

Answer 1

Answer:

Hey mate

Step-by-step explanation:

ur answer is above hope it helps you!!

like and mark as brainlist if helps

Thanks:))

Answer 2

Answer:

10:13

Step-by-step explanation:

we know : 1 dozen = 12

given : 12 pen = 240 rs.

20 notebook = 520 rs.

cost of 1 pen = 240/12 = 20 rs.

cost of 1 notebook = 520/20 = 26 rs.

ratio of price of pen to notebook = 20:26 = 10:13