Answer:
the weight retain by the roasted coffee beans is 60 % of the initial weight of the coffee beans.
Explanation:
Assume the initial weight of the coffee beans be 'x'
given,
Roasted coffee beans retains weight
=
=
percentage of initial weight the retain will be equal to
=
= 60% of x
hence , the weight retain by the roasted coffee beans is 60 % of the initial weight of the coffee beans.