Kayla has a 41% grade average. Then sha takes an exam that is for 20% of her grade and gets an 100%. What is her grade now?

0.80*41% + 0.2*100% = Final grade

= 61%

Looks like she will have a chance at passing the course.

0.80*66%+0.1*=

what would 1 and 3?4s be in decimal form

To find Kayla's new grade after taking the exam, we need to consider both her previous grade average and the weight of the exam.

Step 1: Calculate the weighted grade average before the exam:
Since the exam is worth 20% of her overall grade, her previous grade average contributes 80% to the overall grade. Multiply her grade average by 0.8 (80%) to get the weighted average before the exam:
Weighted grade average before exam = 41% * 0.8 = 32.8%

Step 2: Calculate the contribution of the exam to the overall grade:
Since Kayla scored 100% on the exam, multiply her exam score by the weightage of the exam (20%):
Exam contribution = 100% * 0.2 = 20%

Step 3: Calculate the new overall grade after the exam:
The new overall grade is the sum of the weighted average before the exam and the contribution of the exam:
New overall grade = Weighted grade average before exam + Exam contribution
= 32.8% + 20%
= 52.8%

Therefore, Kayla's grade after taking the exam is 52.8%.