Question

The four-chambered heart of a humpback whale weighs approximately 430 pounds. 1 kilogram is equal to 2.2 pounds. What is the weight of the humpback whale’s heart in kilograms?

.005 kilograms

195.5 kilograms

215 kilograms

946 kilograms

Answer 1

B. 195.5 kg

Explanation:

Given

Weight in pounds = 430 pounds

1 kilogram = 2.2 pounds

Required

The weight in kilogram

Let x represents the weight of the humpback's whale's heart in kilogram

Such that;

`x = 430 lb`

`1kg = 2.2lb`

By Cross multiplication

`x * 2.2lb = 430lb * 1kg`

Divide both sides by 2.2lb

`(x * 2.2lb)/(2.2lb) = (430lb * 1kg)/(2.2lb)`

`x = (430lb * 1kg)/(2.2lb)`

`x = (430lb1kg)/(2.2lb)`

`x = (4301kg)/(2.2)`

`x = 195.454545 kg`

Approximate

`x = 195.5kg`

Hence, the weight of the heart is 195.5kg