Lời Giải
1.Four-ninths of a number is 76. Find the number?
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Represent the number with
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2 In 5 years time I will be 5 times as old as I was 11 years ago. Form a suitable equation, and hence determine my age. \(? \)The sum of three consecutive natural numbers is 624, find the numbers.The larger of two numbers is two more than five times the smaller number. If the sum of the two numbers is 80 find both numbersThe sum of two consecutive integers is −5. Find the numbers.Find how long it takes a 900 investment to earn 400 interest if it is invested at 4% interest compounded quarterly.