D. Solve the following problems with statement. (Any 3)
3x4=12
1. Mr. Rahul bought 18 kg of mangoes for 267.30. At what rate per kg did he buy mangoes?
2. The product of two fractions is 5. If one of them is 95/7. Find the other number.
3. Simplify: 12 - [6- 3+ { 82 ( 8-6) }].
4. An iron rod has been divided into & pieces of equal lengths. If the length of each piece is 27/4 m,
what was the original length of the iron rod?
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Answer:
1. Quantity of Mangoes Rahul bought = 18 kg.
Amount Rahul paid = Rs. 267.30
Rate per kg = Amount paid /Quantity bought
= 267.30 /18
= 14 .85 Rs.
Answer: Rahul bought mangoes @ Rs 14and 85p
2. Let the other no.be X
As per given 95/7x X = 5
Therefore X = 5× 7/95
X= 7/19
Answer : The other no.is 7/19.
3. 12 - [6- 3+ { 82 ( 8-6) }]
12 - [6- 3+ { 82 ( 2) }]
12 - [6- 3+ { 164 }]
12 - [3+ 164 ]
12 - 167
( - 155)
Answer: (-155)
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