12. Two numbers are in the ratio of 3 : 4. If 10 is
added to each number, the ratio becomes
5 6. Find the numbers.
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Step-by-step explanation:
well I'm not getting how to explain it, so I'm directly going to calculation.
3a +10 : 4a+10 :: 5:6
(3a +10)×6 = (4a+10) ×5
18a +60 = 20a + 50
60-50 = 20a - 18a
10 = 2a
a = 5
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