Advertisements
Advertisements
प्रश्न
An alloy consists of 13 parts of copper, 7 parts of zinc and 5 parts of nickel. What is the percentage of each metal in the alloy?
उत्तर
copper = 13 parts, zinc - 7 parts Nickel = 5 Parts
Total alloy = 13 + 7 + 5 = 25 parts
Now, percentage of copper `= 13/25 xx 100 = 52%`
Percentage of zinc `=7/25 xx 100 = 28%`
and percentage of nickel `=5 /25 xx 100 = 20%`
APPEARS IN
संबंधित प्रश्न
In an election, two candidates A and B contested. A got 60% of the votes. The total votes polled were 8000. How many votes did each get?
A person saves 12% of his salary every month. If his salary is ₹2,500, find his expenditure.
Seeta got 75% marks out of a total of 800. How many marks did she lose ?
A class has 30 boys and 25 girls. What is the percentage of boys in the class?
Increase: 1000 by 3.5%
The weight of a machine is 40 kg. By mistake it was weighed as 40.8 kg. Find the error percent.
If x is 30% more than y; find : `"y"/("y" - "x")`
From a cask, containing 450 litres of petrol, 8% of the petrol was lost by leakage and evaporation. How many litres of petrol was left in the cask?
A number first increases by 20% and then decreases by 20%. Find the percentage increase or decrease on the whole.
Convert the following decimal as percentage
0.282
