Tag: math & puzzles

A man was asked what price per 100 he paid for some apples. His reply was as follows: "If they had been 4 cents more per 100 I should have got five less for $1.20." Can you say what the price was per 100?

Tulsi bought 15 goods worth \$50 each [exchange rate Rs.40 per dollar]. She paid customs duty of \$30 [exchange rate Rs.45 per dollar] and marked each good at Rs. 1,500. If she sold all except two, what is her profit or loss%?

With a certain amount of money, Raj can buy either 40 pineapples or 65 apples. He retains 15% of the money for taxi fare,when he buys 18 pineapples, then the number of apples he can buy are

The average age of 20 boys in a class is 14. If the teacher is included in the group and one boy is excluded from the group, the average increases by 0.5. What is the difference in the age of the teacher & the out going student

In an examination 80% students passed in Physics, 70% in Chemistry, while 15% failed in both the subjects. If 390 students passed in both the subjects, find the total number of students who appeared in the examination.

Dave purchased 150 bales of cotton at Rs. 70 per bale. He spent Rs. 500 on the transportation, paid octroi at the rate of 40 paise per bale and paid Rs. 140 to the coolie. What must be the S.P. per bale to have a gain of 20%?

Rakesh purchased a plot for Rs. 2.3 lakh and Ashish purchased a flat at Rs. 2.47 lakh. The respective annual rates at which the prices of the plot and the flat increased were 10% and 5%. After two years they exchanged their belongings and one paid the other the difference. Then