Composite ratio

Jakub, Aneta, and Lenka divided 1342 USD in the ratio 5/2: 3/10: 1/4. How much did Lenka take?

Result

L =  110 Kc

Solution:

$l=\dfrac{ 1/4 }{ 5/2 + 3/10 + 1/4 }=\dfrac{ 5 }{ 61 } \doteq 0.082 \ \\ L=1342 \cdot \ l=1342 \cdot \ 0.082=110 \ \text{Kc}$

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