Question

9) An alloy contains copper and zinc in the ratio 9:4. If
the amount of copper present in the alloy is 24 kg, then
what is the amount of zinc present in the alloy?
A) 9 kg
B) 9.67 kg
C) 10.33 kg
D) 10.67 kg​

Answer 1

Answer: D) 10.67

Let copper be 9x & zinc be 4x

Copper ⇒9x=24kg

⇒x = 24/9​

Zinc  ⇒  4x  

          = 4×24/9

⇒10.67