Which number is halfway between begin fraction three over five end fraction and rationals, irrationals, and radicals, part 1?

a. begin fraction seven over ten end fraction

b. begin fraction two over three end fraction

c. begin fraction twenty-seven over forty end fraction

d. begin fraction thirteen over twenty end fraction

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu