Welcome to Bytelearn!

Let’s check out your problem:

How many pounds of candy that sells for $\$ 1.75$ per lb must be mixed with candy that sells for $\$ 1.25$ per $\mathrm{lb}$ to obtain $20 \mathrm{lb}$ of a mixture that should sell for $\$ 1.50$ per $\mathrm{lb}$ ?$\newline$$\square$ lb of $\$ 1.75$-per-lb candy must be mixed with $\square$ lb of $\$ 1.25$-per-lb candy.$\newline$(Type integers or decimals.)