George and Martha Washington are married and file a joint return. The have two children, George Jr., age 9 and Betsy, age 11; both are qualifying children under the tax code. All members of the family are US citizens with Social Security numbers. In 2020, their AGI was $240, 012. Calculate the maximum child tax credit for the Washingtons.

Additionally, stipulate the conditions necessary for each child to qualify for the credit and the tests that each child must meet.