Question

A certain sum and its interest in 4 years becomes ₹480. If interest is 1/5th of the Principal, find Principal and the Rate percent per annum​

Answer 1

Answer:

The Greeks and Romans continued to refine the art of map making, culminating with the work of Claudius Ptolemaeus (in English Ptolemy). Ptolemy was a geographer, mathematician and astronomer who lived in Roman Egypt. In about 150 AD he famously published a scientific treatise titled Geographia (in English Geography).y : If x-y+z=7 and zx-xy-yz=15 find x^2+y^2+z^2

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