A merchant has 1000 kg of sugar , part of which he sells at 8% profit and the rest at 18% profit. He gains 14 % on the whole. The quantity sold at 18% profit is..

A merchant has 1000 kg of sugar , part of which he sells at 8% profit and the rest at 18% profit. He gains 14 % on the whole. The quantity sold at 18% profit is..

Ans: 600 kg.