Rs. 1000 is deposited in a bank at the rate of 7% simple interest for 5 years. The maturity amount is:
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To quickly calculate simple interest when the principal has trailing zeros, cancel out the two zeros with the 100 in the denominator instantly: \(\text{S.I.} = 10 \times 7 \times 5 = 350\). Then add it back to the principal: \(1000 + 350 = 1350\).