The problems of profit and loss is universally taught in classes above VIII , and above .In fact the problems of profit and loss are given to students during entrance exams of top management schools . The maths are useful for general day to day life. For example a traders who may not be educated a lot on maths function, will have to compute his profit or loss on a trade.
Profit & Loss Math Trick -Part 1
So , you are asked to solve following problem
A trader buys 8 oranges for Rs 1o and sells 9 Oranges for Rs 11. What is gain or loss in percentage?
Steps 1 : Buy 8 Oranges for RS 10
Step 2: Sells 9 Oranges for Rs 11
Step 3 : 8 x 11 – 10x 9 [ Mark the cross relationship]
10 x 11
Step 4: 88-90/110 = (-) 2/110
Answer is Loss of 0.018 %
The second example is given below .Just see the image below slowly and give attentions to the arrows down below to understand the relation ship between various data of a problem , once you under stand , you can quickly solve the 5 problems given below , without even using the pen or paper.
Now take your test on following two questions . Do not use the pen or paper , if you really think you are fast and has understood the problem
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1. Question1 points
A man buys 10 pen for Rs 50 and sells 5 pen for Rs 40. Which is the correct gain out of following?CorrectIncorrect
2. Question1 points
A girl buys 20 eggs for Rs 20 but sells 15 for Rs 14. What is her gain or loss percentage?CorrectIncorrect
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