Question

The cost of telephone calls in an industrial town is 30 paise per call for the first 100 calls, 25 paise per call for the next 100 calls, and 20 paise per call for calls exceeding 200. how many calls can one make for rs.50

Answer 1

GIVEN , first 100 calls = 30 paise

=100 × 30 = 3000paise

= 3000/100= Rs 30
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money left = Rs 50 - Rs 30 = Rs 20
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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

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Your Answer : 180 calls
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