Collected 58291

Veronika collected 3/5 kg of paper, Alex collected 3/4 kg of paper, and Juraj collected 7/10 kilograms of paper.
a) who collected the most and who collected the least?
b) how many kg of paper did they collect together? (cut the result in the form of a mixed number)

Correct answer:

a = Alex
b =  2 ¹⁄₂₀ = 41/20 kg

Step-by-step explanation:

$$\begin{gathered} V=3/5=\frac{3}{5}=0.6\text{kg} \\ A=\frac{3}{4}=0.75\text{kg} \\ J=7/10=\frac{7}{10}=0.7\text{kg} \\ V<J<A \\ a=Alex \end{gathered}$$

$b=V+A+J=\frac{3}{5}+\frac{3}{4}+\frac{7}{10}=\frac{12}{20}+\frac{15}{20}+\frac{14}{20}=\frac{12+15+14}{20}=\frac{41}{20}=\frac{41}{20}\text{kg}=2.05\text{kg}$

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