She said, "Sir, can you tell me simple method for this ratio and proportion problem ?"
The problem is:
Which number is to be subtracted from 49, 143, 61, 179 so that the numbers so obtained are in proportion?
I surprised by seeing the method. I simply told her, "You are doing the problem of ratio and proportion and not using the property of ratio and proportion."
Here you need to take the product of the Numbers 49 and 179. In the same way you need to take the product of 61 and 143. You know very well that so many times, we can't use the calculators, so doing this multiplications will waste your more valuable time (the valuable time of your computer/mobile games). I am simply joking. If you want, you can use this time to think more on mathematical problems. Now we will see other simple method in which no need of doing more multiplications.
Here we had not done any complicated multiplication. So you need to apply all the basic concepts to think on the problem while solving it.
In Hindi, very beautiful Prayer of Goddess "Saraswati" ( the goddess of knowledge and arts ) is there. Please see the following lines (in Hindi)