In 2010, Total employees =600P=0.2×600=120 Q=0.25×600=150 R=0.25×600=150 S=0.25×600=150 T=0.05×600=30 Employees increased in 2016=15%=90 Total employees in 2016=600+90=690 P,Q and R remained unchanged, so total of P,Q and R in 2016=120+150+150=420 S increased by 40%=0.4×150=60 Total S employees in 2016=150+60=210 Therefore, T in 2016=690−(420+210)=60