Answer:
84.6 minutes
Step-by-step explanation:
94% of 90 minutes =
= 0.9 * 94 minutes
= 84.6 minutes
there are 16 3/8s in 6
a + 20 = 7*12 (multiplied both sides by 12)
a + 20 = 84 (calculated 7*12)
a = 84 - 20 (subtracted 20 on both sides)
a = 64 (calculated 84-20)