मराठी

800 kg of mortar consists of 55% sand, 33% cement and rest lime. What is the mass of lime in mortar? - Mathematics

Advertisements
Advertisements

प्रश्न

800 kg of mortar consists of 55% sand, 33% cement and rest lime. What is the mass of lime in mortar?

बेरीज
Advertisements

उत्तर

We have,

Percentage of sand in mortar = 55%

Percentage of cement in mortar = 33%

So, percentage of lime in mortar = 100 – 55 – 33 = 100 – 88 = 12%

∴ Weight of mortar = 800 kg

∴ Mass of lime in mortar = 12% of 800 kg

= `12/100 xx 800`

= 12 × 8

= 96 kg

Hence, weight of lime in mortar is 96 kg.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Comparing Quantities - Exercise [पृष्ठ २०७]

APPEARS IN

एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
पाठ 7 Comparing Quantities
Exercise | Q 103. | पृष्ठ २०७

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

252 is 35% of a certain number, find the number.


A number decreased by 23 % becomes 539. Find the number.


Express the following as percent: 0.025


Express as a percent:

0.02


The price of rice rises from Rs. 30 per kg to Rs. 36 per kg. Find the percentage rise in the price of rice.


If x % of x = 25, then x = _______


An average urban Indian uses about 150 litres of water every day.

Activity Litres per person per day
Drinking 3
Cooking 4
Bathing 20
Sanitation 40
Washing clothes 40
Washing utensils 20
Gardening 23
Total 150

How much less per cent of water is used for cooking in comparison to that used for bathing?


What is 100% of 500?


When you design your healthy diet, you want to make sure that you meet the dietary requirements to help you grow into a healthy adult. As you plan your menu, follow the following guidelines

  1. Calculate your ideal weight as per your height from the table given at the end of this question.
  2. An active child should eat around 55.11 calories for each kilogram desired weight.
  3. 55 per cent of calories should come from carbohydrates. There are 4 calories in each gram of carbohydrates.
  4. 15 per cent of your calories should come from proteins. There are 4 calories in each gram of proteins.
  5. 30 per cent of your calories may come from fats. There are 9 calories in each gram of fat.

Following is an example to design your own healthy diet.

Example

  1. Ideal weight = 40 kg.
  2. The number of calories needed = 40 × 55.11 = 2204.4
  3. Calories that should come from carbohydrates = 2204.4 × 0.55 = 1212.42 calories.
    Therefore, required quantity of carbohydrates = `1212.42/4` = 303.105 g = 300 g. (approx)
  4. Calories that should come from proteins = 2204.4 × 0.15 = 330.66 calories.
    Therefore, required quantity of protein = `330.66/4` g = 82.66 g.
  5. Calories that may come from fat = 2204.4 × 0.3 = 661.3 calories.
    Therefore, required quantity of fat = `661.3/9` g = 73.47 g.

Answer the Given Questions

  1. Your ideal desired weight is ______ kg.
  2. The quantity of calories you need to eat is ______.
  3. The quantity of protein needed is ______ g.
  4. The quantity of fat required is ______ g.
  5. The quantity of carbohydrates required is ______ g.
Ideal Height and Weight Proportion
Men Women
Height Weight Height Weight
Feet cm Kilograms Feet cm Kilograms
5’ 152 48 4’7” 140 34
5’1” 155 51 4’8” 142 36
5’2” 157 54 4’9” 145 39
5’3” 160 56 4’1” 147 41
5’4” 163 59 4’11” 150 43
5’5” 165 62 5’ 152 45
5’6” 168 65 5’1” 155 48
5’7” 170 67 5’2” 157 50
5’8” 173 70 5’3” 160 52
5’9” 175 73 5’4” 163 55
5’10” 178 75 5’5” 165 57
5’11” 180 78 5’6” 168 59
6’ 183 81 5’7” 170 61
6’1” 185 84 5’8” 173 64
6’2” 188 86 5’9” 175 66
6’3” 191 89 5’10” 178 68
6’4” 193 92 5’11” 180 70

Given below is a Mathematical term.

Find the percentage of consonants in the term.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×