rajanraju25
Why cant 75/5 or 60/4 give us duration of completion and hence final answer being “either statement is enought for solution”
We only know that ratio of rates is 5:4. This does not mean that the actual rates are 5 toys/hour and 4 toys/hour.
Example:
(1) actual rates are 5 toys/hour and 4 toys/hour (ratio of 5:4 maintained). Time = 75/5 = 60/4 = 15 hours.
(2) actual rates are 25 toys/hour and 20 toys/ hour (ratio of 5:4 still maintained). Time = 75/25 = 60/20 = 3 hours.
Do we have a clear answer for what the actual duration (time) of the competition actually is? Nope.
Hope this helps.