Practical problems of grade 6 1. The number a is 23 / 7, 3 more than the number B. the number C is 7 / 10 of the number B. what is the number C 2. The original 15 kg of monosodium glutamate in the hotel was used up by 1 / 5 in the first week and the remaining 1 / 3 in the second week. How many kg of monosodium glutamate should we buy to be 2 kg more than the original one

Practical problems of grade 6 1. The number a is 23 / 7, 3 more than the number B. the number C is 7 / 10 of the number B. what is the number C 2. The original 15 kg of monosodium glutamate in the hotel was used up by 1 / 5 in the first week and the remaining 1 / 3 in the second week. How many kg of monosodium glutamate should we buy to be 2 kg more than the original one

1、（23/7-3）×7/10=1/5
The answer is 1 / 5
2. 15 × (1-1 / 5) × (1-1 / 3) = 8kg
15 + 2-8 = 9kg
You need to buy 9 kg of monosodium glutamate, which is 2 kg more than the original monosodium glutamate