Ethan can blow 15 balloons in 20 minutes, Jun Wei can blow 18 balloons in 25 minutes and Vishal can blow 16 balloons in 21 minutes. Assuming that all balloons are blown to the same size, who can blow balloons at a faster rate?
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Jun Wei takes (25/18)=1.38 minutes to blow a balloon. Vishal takes (21/16)=1.31 minutes to blow a balloon. As said above, lesser the time, faster is the rate. Therefore Vishal can blow the balloon at the fastest rate.
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