Question

Ethan can blow 15 balloons in 20 minutes, Jun Wei can blow 18 balloons in 27 minutes and Vishal can blow 15 balloons in 21 minutes. Assuming that all balloons are blown at the same size, who can blow balloons at the fastest rate?

Answer 1

Answer:

eathan...........................

Answer 2

Step-by-step explanation:

Solution;

Now,

In 20 mins, Ethan can blow 15 balloons

In 1 min, Ethan can blow 15/20 balloons = 3/4 balloons

Similarly,

In 27 mins, Jun Wei can blow 18 balloons

In 1 min, Jun Wei can blow 18/27 balloons

At last,

In 21 mins, Vishal can blow 15 balloons

In 1 min, Vishal can blow 15/21 balloons

Now, their rates are same

Ethan = 3 = 3x567 = 1701

4 4x567 2268

Jun Wei = 18 = 18x84 = 1512

27 27x84 2268

Vishal = 15 = 15x108 = 1620

21 21x108 2268

Here, Ethan has fastest rate.