(b) How many Shirt 'A' can be bought ins [1 U] (c) In how many rupees did shopkeeper sell these two shirts? Calculate it. (d) If a shopkeeper sold two shirts in Rs. 2100 , how much profit percent shoul shopkeeper allowed? \( [2 \mathrm{HA} \) Anita is an ofticer of a company. Her monthly salary is Rs. 42000 . She spent part of her income in food and \( \frac{1}{3} \) part of her income in education and she saved il remaining income. (a) Define rational number. (b) How much amount did she save in a month? (c) Write any one rational number between \( \frac{2}{5} \) and \( \frac{1}{2} \).
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Did you know that the concept of rational numbers dates back to ancient civilizations? The Egyptians and Babylonians used fractions extensively, but it wasn't until the Greeks that we encountered a formal definition of rational numbers. They defined them as numbers that can be expressed as the quotient of two integers, with the denominator not being zero. This was revolutionary, paving the way for modern mathematics! Anita's situation showcases the real-world application of budgeting and financial management. By calculating her expenditures, she can make informed decisions about her savings. If her monthly salary is Rs. 42,000 and she spends 1/3 on education, that’s Rs. 14,000. By subtracting her total expenses from her salary, she can clearly see how much she can save and plan for future investments or emergencies!