Kilograms 31301

From two types of tea for 160 CZK per 1 kg and 220 CZK per kilogram, 20 kilograms of the mixture for 205 CZK per kilogram is to be prepared. How many kilograms of each type of tea need to be mixed?

Correct answer:

a =  5 kg
b =  15 kg

Step-by-step explanation:

m=20 kg  160a+220b=205m a+b=m 160a+220b=205 20 a+b=20  160 a+220 b=205 20 a+b=20  160a+220b=4100 a+b=20  Row21601 Row1Row2 160a+220b=4100 0.38b=5.63  b=0.3755.625=15 a=1604100220b=1604100220 15=5=5 kg  a=5 b=15

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