Question
20% of ‘m’ added to 80% of ‘n’ equals 180. If
‘n’ is 90 more than ‘m’, find the value of (2m – n)Solution
According to the question, 0.2m + 0.8n = 180…….. (1) And, n – m = 90……. (2) On solving equation (1) and (2), we get m = 90 and n = 180 Therefore, (2m – n) = 180 – 180 = 0
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