The cost of telephone calls in an industrial town in 30 paise call for the 1st calls 25 paise for th...........

Quantitative Aptitude ( CCS) Simplification

The cost of telephone calls in an industrial town in 30 paise/call for the 1st calls, 25 paise for the next 100 calls and 20 paise for calls exceeding 200. How many calls one make for Rs. 50?

175

180

200

225

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Explanation:

Given , first 100 calls = 30 paise

=100 × 30 = 3000paise

= 3000/100= Rs 30
_______________________________
money left = Rs 50 - Rs 30 = Rs 20
_______________________________
next 100 calls = 25 paise ( given )

let one can make ' x ' calls for Rs 20

25paise × x = Rs 20

25 paise × x = 20 × 100= 2000 paise

x =2000 paise / 25 paise = 80 calls

therefore , total calls one can make for Rs 50

=100 + 80 = 180 calls

Hence, option 2 is the correct answer.