Camalama
28.07.2019 •
Mathematics
At a store, 20 feet of fencing cost $36. at that rate, how much will 15 feet of fencing cost?
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Ответ:
Ответ:
20 feet cost $36
Find the cost of 1 foot by dividing by 20
20 feet = $36
1 foot = $36 ÷ 20
1 foot = $1.8
Find the cost of 15 feet by multiplying by 15
1 foot = $1.80
15 feet = $1.80 x 15
15 feet = $27
$27
Ответ:
£199.95
Step-by-step explanation:
100% - 69% = 31%
31% of £645
= 31/100 × £645
= 0.31 × £645
= £199.95
= £199.95 is the final answer as it cannot be rounded off to 2 DP.