No question just hello

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Empty box + box + empty box fill in the box is equal to 30 how

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers