6th grade maths question Sunitha bought fruits weighting 12kg out of this, 4kg 500g is apple, 1kg 75g is orange and the rest is grapes. what is the weight of the grapes?

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Step-by-step explanation:

so, if I understand correctly, then she bought 12 kg of mixed fruits.

4 kg and 500 g are apples.

you remember that the word "kilo" means 1000.

so, the apples actually weigh 4500 g or 4.5 kg.

1 kg and 75 g are oranges. that are 1075 g or 1.075 kg.

to calculate the rest (for the grapes) we best convert also the total weight into g : 12,000 g

weight grapes = 12000 - 4500 - 1075 = 6,425 g = 6 kg and 425 g = 6.425 kg

6,425gr

Total weight :

12kg = 12 x 1,000gr

12kg = 12,000gr

Apple weight :

4kg 500gr = (4 x 1,000) + 500gr

4kg 500gr = 4,000gr + 500gr

4kg 500gr = 4,500gr

Orange weight :

1kg 75gr = (1 x 1,000) + 75gr

1kg 75gr = 1,000gr = 75gr

1kg 75gr = 1,075gr

Grape weight :

Weight of the grapes = 12,000 - 4,500 - 1,075

Weight of the grapes = 6,425gr

 1) D

2) C

Step-by-step explanation:

1. The blue algae has an initial mass of 20 kg and doubles its mass every hour. Then after t hours, the mass of blue algae is

2. The green algae has an initial mass of 160 kg and grows at a constant rate of 0.20 kg per minute. Then after t hours (60t minutes), the mass of green algae is

Part I) At t=3:

The mass of green algae has 196-160=36 kg more mass at 3 hours.

Part II) At t=4:

The blue algae has 320-208=112 kg more mass at 4 hours.