Question
Sam, Ahmad and Tom have some erasers. The ratios of their erasers are as follows:

Sam : (Sam + Ahmad + Tom) = 1 : 3
Ahmad : (Sam + Tom) = 1 : 3

Tom has 16 erasers more than Ahmad. In the end, Tom gives away all he has to Ahmad and Sam so that both Ahmad and Sam end up with the same number of erasers, how many erasers has Sam received from Tom?
4 m

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Sam, Ahmad and Tom have some erasers. The ratios of their erasers are as follows:

Sam : (Sam + Ahmad + Tom) = 1 : 3
Ahmad : (Sam + Tom) = 1 : 3

Tom has 16 erasers more than Ahmad. In the end, Tom gives away all he has to Ahmad and Sam so that both Ahmad and Sam end up with the same number of erasers, how many erasers has Sam received from Tom?