The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same quality?

Solution:

This is a direct variation and is calculated as follows

The cost of 27 kg of iron = Rs. 1080

The cost of one kg of iron = Rs. 1080/27 = Rs. 40/kg

Therefore,.

Cost of 120 kg of iron = 40 × 120 = Rs. 4800

✦ Try This: The cost of 30 kg of iron is Rs 1440, what will be the cost of 100 kg of iron of the same quality?

The cost of 30 kg of iron = Rs. 1440

The cost of one kg of iron = Rs. 1440/30 = Rs. 48/kg

Therefore ,

Cost of 100 kg of iron = 48 × 100 = Rs. 4800

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 13

---

NCERT Exemplar Class 8 Maths Chapter 10 Problem 81

The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same quality

Summary:

The cost of 27 kg of iron is Rs 1,080, the cost of 120 kg of iron of the same quality will be Rs. 4800

---

☛ Related Questions:

• At a particular time, the length of the shadow of Qutub Minar whose height is 72 m is 80 m. What wil . . . .
• In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, ho . . . .
• Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire s . . . .