Can someone help me please?

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Me with this one question, and i'll upvote the brainliest answer