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one number is three moro than the other their sum is 7find the numberAn amount is invested for 5 years at 16% p.a. compounding quarterly. If the value of the investment after 5years is 80,600, what was the principal?Sofia is investing 8,000 in an account paying 5.5% interest compounded quarterly.What will Sofia's account balance be in 7 years?Two numbers have a sum of 19 and a differenza of 9. Write a system and solve it to identify the two numbers.number in creased by nine is fifteen