Although economies around the world (and especially in developed nations) are now

roaring back to life, many children are still out of school or learning remotely. Even once

these children return, the loss of education may lead to long-term effects on outcomes.

Many are also worried that these negative consequences will be disproportionately borne

by disadvantaged students, widening existing disparities in education.

In order to understand the extent to which COVID-19 has widened inequality in

education, you gather the following information on students from US elementary schools

in March 2021:

25% of all students are still learning remotely.

Students are classified by parental income percentile into "High" (Top 25%), Low

(Bottom 25%), and "Middle" (25th to 75th Percentile)

20% of in-person students are low-income

20% of middle-income students are learning remotely.

Based on the information above:

a. [3 points] What percent of all students are middle-income students who are

learning remotely?

b. [5 points] What percent of high-income students are learning remotely?