Ononot — A shop sells 2 types of coffee. Blend A costs \12/kg, Blend

Real-World Applicationsmedium

0:00.0

A shop sells $2$ types of coffee. Blend A costs $\$ 12 $/kg, Blend B costs$ $18 $/kg. To make a$ 10 $kg mix costing$ $15$/kg, how much of Blend A is needed?