Question
The ratio of two numbers is 6:7. If each number is
decreased by 4, the ratio becomes 5:6. Find the smaller numbers.Solution
Let the two numbers be 6x and 7x. => (6x-4)/(7x-4) = 5/6 => 36x – 24 = 35x – 20 => x = 4 The smaller numbers = 6 × 4 = 24
Which two numbers should be interchanged to make the following equation correct?
4 × 12 ÷ 9 + 7 – 10 = 0
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