3x 3/8. Helllppp please and thank yo

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.