Determine Ramiro's Mathematics Weighted Average: Will He Meet the 85 Requirement?

Question

Ramiro applies to a high school where the average grade required for mathematics is 85.

The following are Ramiro's grades on his maths exams:

GradeWeight40%15%10%35%92789883

Will Ramiro be admitted to the high school and what is his grade average?

Video Solution

Step-by-Step Solution

To determine if Ramiro's grades meet the average required, we calculate the weighted average of his grades. This involves applying the formula for calculating a weighted average:

  • Multiply each grade by its corresponding weight:
    92×0.40=36.8 92 \times 0.40 = 36.8
    78×0.15=11.7 78 \times 0.15 = 11.7
    98×0.10=9.8 98 \times 0.10 = 9.8
    83×0.35=29.05 83 \times 0.35 = 29.05
  • Sum these products to calculate the weighted average:
    Weighted Average=36.8+11.7+9.8+29.05=87.35 \text{Weighted Average} = 36.8 + 11.7 + 9.8 + 29.05 = 87.35

Since 87.35 is greater than the required 85, Ramiro's weighted average meets the high school requirement.

Therefore, the solution to the problem is that Ramiro will be admitted to the high school. His weighted grade average is 87.35 87.35 .

Answer

Yes, 87.35 87.35