Question

В пером мешке 20 кг. муки, во втором на 16 кг. больше. истратили 5/7 всей муки. сколько кг. муки осталось?

Answer 1

1)(20+16+20)=56 - всего муки.
2)56:785=40 кг. муки потратили 

Answer 2

16
(20+16+20)-((20+16+20):7×5)

Answer 3

Problem Analysis

We are given two bags of flour. The first bag weighs 20 kg, and the second bag weighs 16 kg more than the first bag. We are told that 5/7 of the total flour was used. We need to determine how much flour is left.

Solution

To find the amount of flour left, we need to calculate the total amount of flour in both bags and then subtract 5/7 of that total.

Let's start by finding the weight of the second bag of flour. We know that it weighs 16 kg more than the first bag, which weighs 20 kg. Therefore, the second bag weighs 20 kg + 16 kg = 36 kg.

Now, we can calculate the total weight of flour in both bags by adding the weights of the first and second bags: 20 kg + 36 kg = 56 kg.

Next, we need to find 5/7 of the total weight of flour. To do this, we multiply the total weight by 5/7: (56 kg) * (5/7) = 40 kg.

Finally, to find the amount of flour left, we subtract the amount used from the total amount: 56 kg - 40 kg = 16 kg.

Therefore, there are 16 kg of flour left.

Answer

There are 16 kg of flour left.