A sum of money at simple interest doubles itself in 10 years .Find the rate percent per annum

Rate = 100/10 = 10%. ∴ The rate of interest is 10%. ∴ The rate of interest is 10%.

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

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multiple all that

step-by-step explanation:

27×17