A set of consecutive positive integers beginning with
1 is written on the blackboard. A student came along
and erased one number. The average of the remaining
numbers is $35\frac{7}{15}$. What was the number erased?
In a city, 40.1% of the adults are illiterate while
85.1% of the children are literate. If the ratio of the
adults to that of the children is 2:3, then what percent
of the population is literate?
A runs $1 \frac{2}{3}$ times as fast as B. If A gives B a start of
80m, how far must the winning post be so that A and
B might reach it at the same time?
Mr. Kumar drives to work at an average speed of 48
Km/hr. The time taken to cover the first 60% of the
distance is 10 minutes more than the time taken to
cover the remaining distance. How far is his office?
Two pipes A and B can fill the cistern in 37.5
minutes and 45 minutes respectively. Both pipes are
opened. The cistern will be filled in just half an hour,
if the B is turned off after
In a competitive examination in Maharashtra state
9% candidates got selected from the total appeared
candidates. Tripura state had an equal number of
candidates appeared and 12% candidates got selected
with 102 more candidates got selected than
Maharashtra state. What was the number of
candidates appeared from each state?
Shiva gave 40% of his monthly salary to his mother
from the remaining he used 7% for electronic gadgets
and 23% he kept aside for his monthly expenses. The
remaining amount he transferred to his friend’s
account. The sum of the amount he gave to his
mother and he transferred to his friend account was
41000. What was Shiva’s monthly salary?
In the half yearly exam only 60% of the students were passed. Out of these (passed in half-yearly) only 70% students are passed in annual exam, out of remaining students (who fail in half-yearly exam) 80% passed in annual exam. What percent of the students passed the annual exam?
In an examination, 78% of the total students who
appeared were successful. If the total number of
failures was 176 and 34% got first class, then how
many students got first class?
Hemant deposits 10% of his salary in PF. He saves 30% of the remaining salary. The ratio of his expense on medicine and groceries is 3:4 of the remaining salary after saving. If his expense on the medicine was Rs. 2700, then find his monthly salary.
Hari invested an amount at a certain rate of interest on simple interest and he got 60% more amount after eight years. If he invests Rs. 9600 at the same rate of interest on simple interest, then find the total interest he would get after four years?
Three cities A, B, C are equidistant from each other.
A motorist travels from A to B at 30km/hour, from B
to C at 40km/hour, and from C to A at 50km/hour.
Then the average speed is