A sample of a radioactive isotope had an initial mass of 700 mg in the year 1991 and decays exponentially over time. A measureme
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<h3>Given :-</h3>
- Pranav ran 20.3 km more than Branda
- Pravin ran 38.6 km
To find :
- No. of kilometers did Brenda run.
- No. of kilometers ran by Brenda be x.
Equation formed:-
Total distance covered by Pravan = More distance covered by Pravan + distance covered by Brenda.
Therefore:-
Write the equation
When we transfer 20.3 to left side the positive sign (+) will change into negative sign (–)
Arrange the equation because x is always represented at left side.
After subtracting 38.6 with 20.3 we will get result as 18.3 .