Question 1
There is a basket which contains apples and pears on Mrs. Putri’s kitchen table. One day, all of her grandchildren came to visit and she gave each one of them the same number of fruits without keeping track which kind it is. If Dewi received $\frac15$ of all the apples and $\frac17$ of all the pears, what is the minimum number of grandchildren can Mrs. Putri have?