Advertisements
Advertisements
प्रश्न
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?
उत्तर
∵ The cost of 27 kg of iron = ₹ 1080
∴ Cost of 1 kg of iron = `1080/27` = ₹ 40
∴ The cost of 120 kg = 40 × 120 = ₹ 4800
Hence, the cost of 120 kg of iron is ₹ 4800.
APPEARS IN
संबंधित प्रश्न
A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of the base that need to be added.
| Parts of red pigment | 1 | 4 | 7 | 12 | 20 |
| parts of base | 8 | .... | .... | .... | .... |
Fill in the blank in of the following so as to make the statement true:
Two quantities are said to vary......... with each other if they increase (decrease) together in such a way that the ratio of the corresponding values remains same.
Mohan takes 9 hours to mow a large lawn. He and Sohan together can mow it in 4 hours. How long will Sohan take to mow the lawn if he works alone?
8 men can do a piece of work in 9 days. In how many days will 6 men do it?
If 25 men earn Rs 1000 in 10 days, how much will 15 men earn in 15 days?
Working 8 hours a day, Ashu can copy a book in 18 days. How many hours a day should he work so as to finish the work in 12 days?
The cost of 12 quintals of soyabean is 36,000 rupees. How much will 8 quintals cost?
Two quantities are said to vary ______ with each other if they increase (decrease) together in such a manner that the ratio of their corresponding values remains constant.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The distance travelled by CNG bus and the amount of CNG used.
Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher ratio?
