£24 call out charge + £14 for each half hour he spends on repair if a repair costs a costumer £66, how long did it take?

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

24 students walk to school

It is 6% because if you subtract 69-58=6 so 6% is the answer to your question.