Determine the mass of the load if 3/7 of its mass is 21 kg.
| May 31, 2021 | education
1. Let’s denote the mass of the cargo X.
2. Since the part of the load is 21 kg, and this is 3/7 of its total mass, then according to the rule of finding the number by its part, we write down the equation and solve it:
X * 3/7 = 21;
X * 3 = 147;
X = 147/3;
X = 49 (kg).
Answer: the weight of the cargo is 49 kilograms.
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