The mass of a human liver scales allometrically as ML = 0.082 x MB^0.87, where MB is the individual's body mass. Suppose the body mass of an individual increases by 30%. What is the percent increase in the mass of their liver?

here's my work..using a person who was originally 140lbs

original size of liver:

ML = 0.082 x (140^0.87)

ML = 6.04

increased size of liver with 30% increase in MB:

ML = 0.082 x (182^0.87)

ML = 7.58

so..percent increase of liver :

7.58 - 6.04 = 1.54

(1.54 / 6.04) x 100 = 25.5% increase

does that look right?

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there's this second problem too..basic concept

Consider an 8-year old child whose body mass is 25 kg and is increasing at a rate of 7 kg/year. Assuming that the mass of the kidneys scales with body mass as Mk=0.021 x Mb^0.85, find the rate at which the mass of the kidneys is increasing (in kg/year).

For this problem..I basically used the weights 25kg,32kg,39kg, etc..increasing it by 7kg

the Mk (mass of kidneys) keep increasing my .07. Would that be the answer?