He’s my spirit animal

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

What type of symmetry does a rhombus have?