Three-quarters 25931

Jarek went strawberry picking for a day. In the morning, he collected two-fifths of the required amount; in the afternoon, he collected 5 kg less than in the morning. In total, he collected three-quarters of the required amount. How many kilograms of strawberries does he have to collect before the end of the brigade?

Correct answer:

x =  25 kg

Step-by-step explanation:

a=2/5 m b=a5 a+b=3/4 m  5a2m=0 ab=5 4a+4b3m=0  Row251 Row1Row2 5a2m=0 b+0.4m=5 4a+4b3m=0  Row354 Row1Row3 5a2m=0 b+0.4m=5 4b1.4m=0  Pivot:Row2Row3 5a2m=0 4b1.4m=0 b+0.4m=5  Row341 Row2Row3 5a2m=0 4b1.4m=0 0.05m=5  m=0.055=100 b=40+1.4m=40+1.4 100=35 a=50+2m=50+2 100=40  a=40 b=35 m=100  x=mab=1004035=25 kg

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