When the total weight of 30 bags flour and 4 sugar is 42.6kg Of each bag weigh 0.75kg what flour?

Let the number of bags of flour be x. Then the number of bags of sugar is 30 - x.

The total weight of the flour is x * 0.75 kg.

The total weight of the sugar is (30 - x) * 1 kg.

The total weight of the flour and sugar is x * 0.75 kg + (30 - x) * 1 kg = 42.6 kg.

Simplifying the equation, we get:

0.75x + 30 - x = 42.6

Combining like terms, we have:

-0.25x = 12.6

Dividing both sides by -0.25, we find:

x = 50.4

Therefore, the number of bags of flour is 50.