Question
The ratio of two numbers is 4:7. If each number is
decreased by 4, the ratio becomes 5:9. Find the smaller numbers.Solution
Let the two numbers be 4x and 7x. => (4x-4)/(7x-4) = 5/9 => 36x – 36 = 35x – 20 => x = 16 The smaller numbers = 4 × 16 = 64
More Ratio and proportion Questions
30Â Â Â Â Â Â 15Â Â Â Â Â Â Â 15Â Â Â Â Â Â Â 30 Â Â Â Â Â Â Â 120Â Â Â Â Â Â Â ?
...19, 37, 65, 91, 127, 169
If 14,   32,    x,   50,    -13,   86,Â
then, find the value of (10x + 5x – 20)?
...6 6 13 39 ? 226
...7 13 15 29 31 57
...24 47 137 ? 2679 16049
...16, 54, 128, ‘?’, 432,686
Find the maximum number of trees which can be planted, 25 meters apart, on the two sides of a straight road 2125 meters long
7, 14, 42, 210, 1470, ?
315 146 267 ? 235 210
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