A sum of money amounts to Rs.
8,400 in 5 years and to Rs. 9,360 in 7
years at simple interest. Find the sum
and rate of interest.
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A mechanical scale or balance is used to describe a weighing device that is used to measure the mass, force exertion, tension and resistance of an object without the need of a power supply. Types of mechanical scale include spring scales, hanging scales, triple beam balances and force gauges.
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