Latest self Aptitude Question SOLUTION: A sum of rs. 36.90 is made up of 90coin that are either 20paise coin or 50paise coins. Find out how many 20 paise coin are there in the total amount? A-47 B-43 C-27 D-63

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(#M40030643) SELF question Alligation and mixture Keep an EYE

A sum of rs. 36.90 is made up of 90coin that are either 20paise coin or 50paise coins. Find out how many 20 paise coin are there in the total amount?
A-47
B-43
C-27
D-63

Kuldeep yadav (10 years ago)

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K.Tejaswini  (10 years ago)

ans:c
x+y=90
0.2x+0.5y=36.90
solving those two equations
x=27 & y=63

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amit kumar  (10 years ago)

36.90*100=x*20+(90-x)*50
solving x=27 ans

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Debashis Dey  (10 years ago)

answer is c-27. solution is given below.
let the no. of 20 paise coins be 'x' and that of 50 paise coins be 'y'
according to question
20x + 50y = 3690 or 2x + 5y = 369 -----eq1
and, x + y = 90 -------eq2
solving eq1 and eq2 for value of 'x' and 'y' we get
x = 27 and y = 63

Is this solution Helpfull? Yes (3) | No (1)  

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