Question
If 40% of 'P' is 60 less than 30% of 'Q', then find 250%
of 'Q', given that (P + Q) = 900.Solution
ATQ; 0.4P + 60 = 0.3Q Or, 60 = 0.3Q - 0.4P........ (I) Also, P + Q = 900 Or, P = 900 - Q...... (II) Using equation (I) and (II), we have; 60 = 0.3Q - 0.4(900 - Q) Or, 60 = 0.3Q - 360 + 0.4Q Or, 420 = 0.7Q So, Q = 600 So, required value = 600 x 2.5 = 1500
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