Question

For what value of c, the linear equation cx + 3y = 24 has equal values of x & y for its solution.

Our excessive dependence on motorized road transport imposes significant economic costs on society. These include congestion, road casualties, physical inactivity and ill health caused by it. Cycling could substantially reduce these risks, while strengthening local economies in both urban and rural areas, supporting local businesses and boosting the economic productivity. A bicycle is being lent at fixed charges for the first three days of week and an additional charge of each day thereafter. If fixed charges are ₹x and per day charges are ₹y, then based on the above information, answer the following questions:

Write linear equation 3x + 2y = 18 in the form of ax + by + c = 0. Also write the values of a, b and c. Are (4,3) and (1,2) solution of this equation?

Reeta was studying in the class 9th C of St. Surya Public school, Mehrauli, New Delhi-110030 Once Ranjeet and his daughter Reeta were returning after attending teachers' parent meeting at Reeta's school. As the home of Ranjeet was close to the school so they were coming by walking. Reeta asked her father, "Daddy how old are you?" Ranjeet said, "Sum of ages of both of us is 55 years, After 10 years my age will be double of you.