How do I solve this?

Answer already there on chegg is wrong.

Thanks in advance

Because of population growth, the state of Washington has been given an additional seat in the House of Representatives, making a total of ten. The state legislature, which is currently controlled by the Republicans, needs to develop a plan for redistricting the state. There are 18 major cities in the state of Washington that need to be assigned to 1 of the 10 congressional districts. The table on the next page gives the numbers of registered Democrats and registered Republicans in each city. Each district must contain between 150,000 and 350,000 of these registered voters. Use Evolutionary Solver to assign each city to 1 of the 10 congressional districts in order to maximize the number of districts that have more registered Republicans than registered Democrats. (Hint: Use the SUMIF function.) City 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Democrat (Thousands) 152 81 75 34 62 38 48 74 98 66 83 86 72 28 112 45 93 72 Republican (Thousands) 62 59 83 52 87 87 69 49 62 72 75 82 83 53 98 82 68 98