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s25756792
the answer is 10:40 
so 1:4
add it up
1+4=5

so 5 total units
$50=5 units
divide by 5
$10=1 unit

so 1:4=10:10 times 4=10:40

the answer is 10:40 
1 add 4 equals 5,
To get to 50 from 5 you times by 10,
so you do the same for the other ratios.
1 × 10 = 10
4 × 10 = 40

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