Предмет: Алгебра, автор: mavlyuda52

После сушки масса зерна уменьшилась на 20 кг и равнялась 300 кг, а влажность составило 10 %. чему равнялась влажность зерна первоначально

Ответы

Автор ответа: mobulnieigri
40

После сушки в 300 кг зерна 10% влажности содержится 300*0,1 = 30кг  воды и 300-30=270 кг сухого зерна.  Во время сушки испарилось 20 кг воды, значит до сушки воды в зерне  было 30+20=50 кг, а масса несушеного зерна была 300+20=320 кг.  50 кг воды в 320 кг зерна составляют 50/320*100=15,625%  Ответ: перврначальная влажность ≈15,6%

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Healthy Living

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1 A control B test C check D examine

2 A manners B ways C habits D customs

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4 A ideal B model C classic D perfect

5 A let B guided C shown D led

6 A into B out C onto D of

7 A artificial B false C fake D counterfeit