JEE Main 25 June 2022 Shift 1 Solved Paper

For a given chemical reaction
γ1A+γ2B→γ3C+γ4D
Concentration of C changes from 10‌mmol‌dm−3 to 20‌mmol‌dm−3 in 10 seconds. Rate of appearance of D is 1.5 times the rate of disappearance of B which is twice the rate of disappearance A. The rate of appearance of D has been experimentally determined to be 9‌mmol‌dm−3‌s−1. Therefore, the rate of reaction is ___ mmol‌dm−3‌s−1⋅( Nearest Integer)