a restaurant currently sells a multi-grain rice blend with 17% brown rice and white rice as the balance. there are plans to reformulate this blend such that a given amount of the rice contains twice...

a restaurant currently sells a multi-grain rice blend with 17% brown rice and white rice as the balance. there are plans to reformulate this blend such that a given amount of the rice contains twice of the brown rice. how much brown rice should be added to 60kg of the old rice blend to make 200kg of the reformulated blend?