The ratio of copper and zinc in an alloy is 9 : 4. If there is 24 kg of copper, find the weight of zinc in the alloy.

9 इकाई = 24 किग्रा => 1 इकाई = 24/9 = 8/3 किग्रा। जस्ते का वजन = 4 इकाई = 4 * (8/3) = 32/3 = 10.67 किग्रा।