Problema Solution
Alex gave 20% of his seashells to John and 3/8 to Ali. Alex remained with 40 seashells. How many seashells did Alex have at the beginning
Answer provided by our tutors
let seashell = x ,given to john = 20% of x = x/5
remaining = x-(x/5) = 4x/5
given to ali = 3/8 of 4x/5 = 3x/10
hence (4x/5) - (3x/10) = 40
5x/10 = 40
x = 40*10/5 = 80
total seashell = 80