Final answer:
To find the kilograms of cement in a 35 kg mixture with a 2:5 cement to sand ratio, calculate the weight per part (5kg) and then multiply by the number of cement parts (2) to get 10 kg of cement.
Step-by-step explanation:
The question asks us to find out how many kilograms of cement are present in a 35 kg mixture of cement and sand mixed in the ratio 2:5. To solve this, we need to consider the total parts in the mixture and find the weight of each part.
First, we add the parts of cement and sand to find the total parts: 2 parts cement + 5 parts sand = 7 parts total.
Then, we find the weight of one part by dividing the total weight of the mixture by the total number of parts: 35 kg ÷ 7 parts = 5 kg per part.
Knowing that there are 2 parts of cement, we calculate the weight of cement: 2 parts × 5 kg/part = 10 kg. So, there are 10 kilograms of cement in the 35 kg mixture.