Book Maths Puzzle Percentage

Can you please convert the following strengths to percentage
1g in 25ml
1g in 90ml
1 in 750
1 in 10,000

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Book Other Question

im working with the pythagorean theorem
how do you solve for c, if a=12 and b=15. So far ive got to 12 squared+ 15 squared=c squared I actually have two, but they are similar.

Problem A: Candice and Pat walked to the site in 9 hours. The next morning they jogged home in 3 hours. How far did they jog if they jogged 4 miles per hour faster than they walked?

Problem B: On Monday, Voltaire drove to town at 60 miles per hour. On Tuesday, he drove to town at 40 miles per hour. If the total travelling time for both trips was 15 hours, how far was it to town?

Thanks so much!