Question

At the start of his diet, Kerrin weighed 15 stone and 12 pounds. Three months later he weighed 14 stone and 10 pounds. there are 14 pounds in a stone. (Calculate the reduction in Kerrin's weight as a percentage of his initial weight, correct to 1 d.p.)

Answer 1

The trick here is to convert the given weights entirely into one unit preferably stones. Then do the problem

Answer 2

I don't get it though... could you tell me the answer and explain?

Answer 3

convert stones to pounds................14 pounds in a stone right??

Answer 4

So, 1 stone = 14 lbs. At the start of the diet he is 15 stones (or 15 x 14 = 210 lbs) and 12 lbs, add those together you get 222 lbs at the start of his diet. Three months later he is 14 stones (or 14 x 14 = 196) and 14 pounds so 196 + 14 = 210. You can do the percentage part, cause i dont know how lol

Answer 5

I don't know how to get the percentage!

Answer 6

tell me how much did the weight change after diet?

Answer 7

it changed 16 pounds

Answer 8

the percentage is change divided by original times 100

Answer 9

right!

Answer 10

so in this case 16/222*100 = 7.2%

Answer 11

where 16 is the change in weight and 222 is the original weight (:

Answer 12

OHHH :D
thank you!

Answer 13

i get it now :)

Answer 14

percentage is a way of saying how much would the change be rated in a scale of 100

Answer 15

anytime :)