Statistics Questions - Two parts

College. Jake applied to go to college at both Texas Tech and University of California Irvine. Based on his undergraduate grades and test scores, Jack believes the probability he is admitted to Texas Tech is 0.25, the probability he is admitted to University of California Irvine is 0.15 and the probability he is admitted to both schools is 0.1.What is the probability Jake is admitted to at least one of the two schools? What is the probability Jake is admitted to University of California Irvine given he has received a positive letter of admittance to Texas Tech