Question
Oliver, Lee and Elijah have some beads. The ratios of their beads are as follows:

Oliver : (Oliver + Lee + Elijah) = 3 : 7
Lee : (Oliver + Elijah) = 1 : 5

Elijah has 30 beads more than Lee. In the end, Elijah gives away all he has to Lee and Oliver so that both Lee and Oliver end up with the same number of beads, how many beads has Lee received from Elijah?
4 m

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Oliver, Lee and Elijah have some beads. The ratios of their beads are as follows:

Oliver : (Oliver + Lee + Elijah) = 3 : 7
Lee : (Oliver + Elijah) = 1 : 5

Elijah has 30 beads more than Lee. In the end, Elijah gives away all he has to Lee and Oliver so that both Lee and Oliver end up with the same number of beads, how many beads has Lee received from Elijah?