If Michael can shovel all the snow of a standard driveway in 12 minutes,and Emon can shovel all the snow of a standard driveway in 36 minutes,then working together,how many minutes would it take for them both to shovel all the now of a standard driveway ?
A 5
B 9
C 15
D 18
Solution
Correct Answer: Option B
একত্রে করে (36×12)/(36+12) =(36×12)/48 =9 মিনিটে
অ্যাপ/ওয়েবসাইটে রুটিনভিত্তিক নিয়মিত লাইভ পরীক্ষা হচ্ছে।