मराठी

If the area occupied by 15 postal stamps is 60 cm2, then the area occupied by 120 such postal stamps will be ______. - Mathematics

Advertisements
Advertisements

प्रश्न

If the area occupied by 15 postal stamps is 60 cm2, then the area occupied by 120 such postal stamps will be ______.

रिकाम्या जागा भरा

उत्तर

If the area occupied by 15 postal stamps is 60 cm2, then the area occupied by 120 such postal stamps will be 480 cm2.

Explanation:

∵ The area occupied by 15 postal stamps = 60 cm2.

∴  The area occupied by 1 postal stamp = `60/15` = 4 cm2

Similarly, the area occupied by 120 such postal stamps = 4 × 120 = 480 cm2 

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Direct and Inverse Proportions - Exercise [पृष्ठ ३२०]

APPEARS IN

एनसीईआरटी एक्झांप्लर Mathematics [English] Class 8
पाठ 10 Direct and Inverse Proportions
Exercise | Q 40. | पृष्ठ ३२०

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m, how long is the model ship?


Which of the following quantities vary directly with each other?
(i) Number of articles (x) and their price (y).
(ii) Weight of articles (x) and their cost (y).
(iii) Distance x and time y, speed remaining the same.
(iv) Wages (y) and number of hours (x) of work.
(v) Speed (x) and time (y) (distance covered remaining the same).
(vi) Area of a land (x) and its cost (y).


Complite the following table given that x varies directly as y

x 4 9 ... ... 3 ...
y 16 ... 48 36 ... 4

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?


Aasheesh can paint his doll in 20 minutes and his sister Chinki can do so in 25 minutes. They paint the doll together for five minutes. At this juncture they have a quarrel and Chinki withdraws from painting. In how many minutes will Aasheesh finish the painting of the remaining doll?


For 9 cows, 13 kg 500 g of food supplements are required every day. In the same proportion, how much will be needed for 12 cows?


A postman can sort out 738 letters in 6 hours. How many letters can be sorted in 9 hours?


100 persons had food provision for 24 days. If 20 persons left the place, the provision will last for ______.


Here is a key board of a harmonium:

  1. Find the ratio of white keys to black keys on the keyboard.
  2. What is the ratio of black keys to all keys on the given keyboard.
  3. This pattern of keys is repeated on larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns.

The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. She knew they could raise Rs 250 for every 60 posters sold.

  1. How much money would Anju’s class make for selling 102 posters?
  2. Could Anju’s class raise exactly Rs 2,000? If so, how many posters would they need to sell? If not, why?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×