Companies 3

Companies supplying electricity to households use two rates. In 1996, the price for 1 kW was 1.10 CZK and night power was sold for 0.46 CZK per kW. In 1997, these rates were 1.28 CZK and 0.53 CZK. Express the ratio of the normal and cheaper rates in both years. How many times was the normal rate greater in both years?

Correct answer:

r₁ =  2.3913
r₂ =  2.4151
r₃ =  1.1636

Step-by-step explanation:

$r_1=1.10/0.46=2.3913$

$r_2=1.28/0.53=2.4151$

$r_3=1.28/1.10=1.1636$

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