Team A has 42 members. Team B has 18 more members than Team A. What percent of the members from Team B must be transferred to Team A so that Team A has as many members as Team B?

15 %

Step-by-step explanation:

42 = members of team A

60 = members of team B

Let x = percent of members transferred

0.01x * 60 = 0.6x = no of members transferred

60 - 0.6x = 42 + 0.6x

60 = 42 + 1.2x

18 = 1.2x

x = 15

15 % of the members on Team B must be transferred to Team A.

Check:

60 - 0.6 * 15 = 42 + 0.6 * 15

60 - 9 = 42 + 9

51 = 51

OK.