Question

10. Reduce 280 in the ratio 7: 3.
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Answer 1

to reduce280

let the no.be7x and3x

now 7x+3x=280

10x=280

x=28

first no. =28*7

=196

second no.=3*28

=84

Answer 2

Sum of ratio=7+3=10

$280 \times \frac{7}{10} = 196 \\ 280 \times \frac{3}{10} = 84$