Advertisements
Advertisements
प्रश्न
An alloy of copper and zinc contains 45% copper and the rest is zinc. Find the weight of zinc in 20 kg of the alloy.
Advertisements
उत्तर
Total weight of alloy = 20 kg
Weight copper = 20 × 45% = `20xx45/100` = 9 kg
Weight of zinc = (total weight of alloy – weight of copper)
= 20 – 9
= 11 kg
APPEARS IN
संबंधित प्रश्न
The cost of an article is first increased by 20% and then decreased by 30%, find the percentage change in the cost of the article.
A number increased by 15% becomes 391. Find the number.
Find the resulting quantity when ₹ 400 is decreased by 8%.
Mr. Singh’s monthly salary is ₹ 15,000. This month he was promoted with an increment of ₹ 3,000 in his salary. Express his increment as a percent of his original salary.
The price of an article increased from ₹ 16 to ₹ 20; find the percentage increase.
If three candidates A, B and C in a school election got 153,245 and 102 votes respectively, then the percentage of votes got by the winner is _____________
A picture of chess board is given. Find the percentage of the squares that have the pieces 
In a class of 50 students, 8 % were absent on one day. The number of students present on that day was ______.
What per cent of 1 day is 1 minute?
Given below is a Mathematical term.
Find the percentage of consonants in the term.
