For her graduation party, Shavonda needs 12.5 liters of soda for every 30 guests. If she invites 45 guests, how many liters of soda will she need?

Question

Quizplus · Accepted Answer

This is a ratio/proportion problem. We have 12.5 liters of soda for 30 guests. So, how many liters of soda does Shavonda need for 45 guests? We can write that as a proportion:
12.5: 30 :: x: 45
Step 1: Rewrite the proportion as a fraction. 
 11ec0fda_98e2_303c_a67f_1f3a5c4a31ab_NR0004_00 Step 2: Cross multiply.
 11ec0fda_98e2_303d_a67f_eb9c5ba45b09_NR0004_00 Step 3: Simplify the right side of the equation. 12.5 x 45 = 562.5
 11ec0fda_98e2_303e_a67f_236f73882422_NR0004_00 Step 4: Simplify by dividing both sides of the equation by 30.
 11ec0fda_98e2_303f_a67f_d755309ca46f_NR0004_00

For Her Graduation Party, Shavonda Needs 12