Question

There was once a family who had to criss a lake with boat. The boat can hold 100 kr only at a time and the weight of father was 100 kg mothers was 90 kg daughters was 20 kg and sons was 10 kg and they had a bag of 50 kg .How will they cross the lake ???

It's tricky bae !!!!!!

Answer 1

Hi,
Let me know if this way works.
Father        - 100kg
Mother       - 90kg
Daughter   - 20kg
Son           - 10kg
Bag           - 50kg

1st trip go         -  Mother + Son   ( 90 + 10)
1st trip return   -  Son  (10) 
2nd trip go       -  Son + Daughter + Bag  (10 + 20 + 50)
2nd trip return  -  Son(10) 
3rd trip go        -  Father (100)
3rd trip return   -  Mother (90)
4th trip go        -  Mother + Son (90 + 10)