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lana66690 [7]
3 years ago
5

A stone is an English measure of weight. There are 14 lb in 1 stone and 2.2 lb in 1 kg.

Mathematics
2 answers:
jonny [76]3 years ago
6 0

Answer:

it is A

Step-by-step explanation:

AveGali [126]3 years ago
3 0
We should use lb to convert weight to kg

let unknown lb be = X
14 lb = 1 stone
X lb = 9 stone
Cross multiply : X × 1 = 9 × 14
X = 126 / 1 = 126 lb

9 stone = 126 lb
let unknown value of kg be = Y
2.2 lb = 1kg
126 lb = Y kg
Cross multiply : 2.2 × Y = 126 × 1
Y = 126 / 2.2 = 57.3 kg

So 9 stone = 126 lb = 57.3 kg

HOPE IT HELPED !!
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