There are approximately 2.2 pounds in a kilogram. To the nearest eightheenth how many eighteenth of kilogram are there in pound.
(a) 7
(b) 8
(c) 9
(d) 39
(e) 40
(a) 7
(b) 8
(c) 9
(d) 39
(e) 40
This is tricky but once you understand the question it should be easy.
1 kilogram = 2.2 pounds
The question is how many 18ths of a kilogram are in a pound.
So let's first get the number of kilograms in a pound.
1 pound = 1/2.2 kilograms = 10/22 = 5/11 kilograms
Let's consider A to be to be the number that corresponds to number of eighteenths of kilogram in a pound.
So 1 pound = A/18 kilograms
But we know 1 pound = 5/11 kilograms
So A/18 = 5/11
A = 18 *5 /11= 90/11 ~=8 (B)
