⁞ Chain Rule
Aptitude ➤ Chain Rule ➤ 1
Question 1
Q1. If the cost of printing a book of 320 leaves with 21 lines on each page and on an average 11 words in each line is Rs. 19, find the cost of printing a book with 297 leaves, 28 lines on each page and 10 words in each line.
Answer : 21 3⁄8
Let the required cost be Rs. x. Then ,
∴ 320 × 21 × 11 × x = 297 × 28 × 10 × 19
⇒ x = 171/8
= Rs. 21 3⁄8
⚔ DISCUSS
Comments
Comments (0)
