Raymond sold an article at a loss of 5%.if he had sold sold it for rupees 270 more, he would have gained 7%.find the cost price of articles

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

linear pair postulates

47 - 90 = 43

43 - 180 = x

x = 137