A small book publisher knows that 26 books weigh 41 lbs. How much do 40 books weigh?

x = 63.08 lbs ≈ 63 lbs

Step-by-step explanation:

You will solve this problem in the same way, to make proportion:

26 : 41 = 40 : x

When we multiply external and internal members we get:

26 x = 40 · 41 = 1640 = > 26 x = 1640 = > x = 1640/26 = 63.076 ≈ 63 lbs

x = 63 lbs

God with you!