b+g=53
3/5 b + 5/7 g = 35
or, knowing that
g is a multiple of 7
b is a multiple of 5
how many such multiple pairs add to 53?
The mathematics club in a school has 53 members. 5/7 of the girls members and 3/5 of the boys members are from lower secondary. The total number of lower secondary members is 35. How many members of the club are boys?
1 answer