The amount was distributed among 20 people.
Explanation:
let the number of people be x and y be amount received by each individual.
so,
xy = 1000 ...........................................(1)
and,
(x+5) (y-10) = 1000..............................(2)
Solving,
(x+5) (
-10)= 1000
or, (x+5) (
) = 1000
or, (x+5) (1000-10x) = 1000x
or, x= 20
And,
y = 50
Hence there were 20 people when the amount was distributed.