Related Questions

In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
A 40
B 50
C 70
D 90
Scheme-1: C6H5N2Cl→CuCNC6H5CN→H2o/H+C6H5COOH→∆Product-I Scheme-2: C6H5NO2→Fe/HCLC6H5NH2→N2NO3+HCL, 273KC6H5N2Cl→H2O/H+Product-II Scheme-3: CH3COOH→NH3CH3CONH2→NaOBrProduct-III উল্লিখিত Scheme সমূহে Product-I, Product-II এবং Product-III হলো যথাক্রমেঃ
A C6H5COONH4, C6H5Cl and CH3OH
B C6H5CONH2, C6H5NH2 and CH3OH
C C6H5CONH2, C6H5NH2 and CH3NH2
D C6H5CONH2, C6H5OH and CH3OH
A manufacturer sells three products i.e. A, B and C. Product A cost 200 and sells for 250, Product B costs 150 and sells for 180, Product C costs 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only
A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product B costs 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only
A manufacturer sells three products i.e A, B and C . Product A costs 200 and sells for 250, Product B costs 150 and sells for 180 , product C costs 100 adn sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only
A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only
A manufacturer sells three products i.e A, B and C. Product A costs 200 and sells for 250, Product b costs 150 and sells for 180, product C costs 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and both
C A only
D C only
Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
A Neutralised by alkali treatment
B Left as such without any treatment
C Diluted with fresh water to reduce its acidity
D None of these
The number of stamps in Ziko's collection is 75% of the number in Pallab's collection. If Pallab has 80 more stamps than Ziko, how many stamps do they have altogether?
A 320
B 240
C 560
D 620
Karim has exactly 3 times as many Bangladesh as non-Bangladesh stamps in his collection . Which of the following cannot be the number of stamps in Karim's collection ?
A 54
B 72
C 80
D 96

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