Mandy begins bicycling west at 30 miles per hour at 11: 00 am. if liz leaves from the same point 20 minutes later bicycling west at 36 miles per hour, when will she catch mandy? a. 2: 00 pm b. 1: 00 pm c. 1: 30 pm d. 2: 30 pm

36(t - 1/3) = 30t

36t - 12 = 30t

6t = 12

t = 2

2 hours past 11AM is 1PM. So Liz catches

Mandy at 1PM.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere