Latest elitmus Aptitude Question SOLUTION: A subscriber is allowed to make a certsin number of telephone calls for a lump sum charge of rs 300.beyond that he is charged at a caertain rate per call. Two subscribers together

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(#M40036583) ELITMUS Numerical Ability question apti Keep an EYE

A subscriber is allowed to make a certsin number of telephone calls for a lump sum charge of rs 300.beyond that he is charged at a caertain rate per call. Two subscribers together make 1400 were chage rs 425 and 925 respectively. if a single person had made all of the 1400 call would have charged rs 1550. how many telephon calls are allowed for the first rs 300?
1.300 2. 350 3. 400 4.450

Asked In elitmus ranjeet (10 years ago)

Unsolved Read Solution (6)

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Read Solution (6) :

prateek  (10 years ago)

let no. of calls for 300=x
now the two subscriber made 1400 total calls
so first subscriber made charged call for (425-300)=125,second made for (925-300)=625
let first man made y calls for 125 rs,second will make 5y calls as 625/125=5
now both will make total 2x calls for 300 each
so we get 2x+6y=1400
now in second case person will make x calls for 300 and 10 y for 1250(1550-300)
now 2nd eqn x+10y=1400
solving both we get x=400

Is this solution Helpfull? Yes (48) | No (1)  

Priyank  (10 years ago)

400 is correct.


1400-----1350(425+925)

2*x+(1400-2*x)=300+300+750

put x=400

800+600=600+750

now for 600 call there is Rs=750.
so for one call there is Rs=750/600=1.25 -------(1)


now same thing happen with single person
1400-----------1550

x+(1400-x)=300+1250

put x=400

400+1000=300+1250

now for 1000 call there is Rs=1250.
so for one call there is Rs=1250/1000=1.25-------(2)

(1) and (2) both are equals...

Is this solution Helpfull? Yes (7) | No (1)  

anshul  (10 years ago)

400
Solv by options

Is this solution Helpfull? Yes (2) | No   

Anoop  (9 years ago)

400
let x telephone calls are allowed for the first rs 300.
1 call charge to two subscriber without pack =(425+925-300-300)/(1400-2x)
1 call charge to one subscriber without pack =(1550-300)/(1400-x)
equating two will get x=400

Is this solution Helpfull? Yes (1) | No   

Kalaivani.A  (10 years ago)

may b 350 r 450

Is this solution Helpfull? Yes | No (5)  

vikram kumar  (10 years ago)

350
a/c
simple call rate = 1550/1400 = 31/28
using this we can proceed
let in 300 rs the total number of given call is x.
1400 - 2x = 750
after that just hit and try the x value from given alternatives.

Is this solution Helpfull? Yes | No (4)  

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