First multiply her average grade by the number of tests she took to find the total number of points she scored: 81 points * 2 = <<81*2=162>>162 points

Then subtract the number of points she scored on her first exam to find how many points she scored on her second exam: 162 points - 78 points = <<162-78=84>>84 points

# Answer

84
Question:
Brittany got a 78 on her first test. After her second test, her average rose to an 81. What grade did she get on her second test?
Answer:
Let's think step by step.

user
84
Brittany got a 78 on her first test. After her second test, her average rose to an 81. What grade did she get on her second test?
train