book Maths Puzzle Numerical Ability

prob. 94 The cost for a long distance phone call is 0.46 for the first minute,and 0.21 for additional minute or portion thereof.Write an inequality representing the number of minutes a person could talk without exceeding 3.00

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book Other Question

My question is : A southbound bus left Frot Walton Beach at 9AM. 2 hours later a northbound bus left the same station. If the buses traveled at the same rate & were 352 kilometer Find the LCD of the given rational expressions and convert each expression to an equivalent rational expression with LCD as the denominator.

7a over 24x^5 y^2 , 5b over 16x^2 y^