Answer:
[tex]\text{36 seconds}[/tex]
Step-by-step explanation:
[tex]\text{Solution:}\\\text{Since Mumtaz can swim }1\dfrac{1}{5}\text{ times faster than Ethan,}\\\text{Time taken by Mumtaz to swim one length = }1\dfrac{1}{5}\times30=\dfrac{1\times5+1}{5}\times30\\\text{or, Required time taken = }\dfrac{6}{5}\times30=36\text{seconds}[/tex]
