Question

Three friends share a bag of erasers. Mary get 1/5 of the eraser. Helen gets 3 more erasers then mary and Sylvia gets 12 erasers.How many erasers are in the bag

?

Answer 1

4/5 of the share belongs to Helen and Sylvia
Difference in total share is= 4/5-1/5
=3/5
So 3/5=12+3
=15
3 units is 15
Thus 1 unit is 15/3 which is 5
And 5 units is 25(5*5)
I am not too sure though
Sorry