One-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey
One-ninth of a certain number exceeds its one-tenth by 4. The number is
One-third of Rahuls savings in National Savings Certificate is equal to one-half of his savings in Public Provident Fund. If he has Rs. 1,50,000 as total savings, how much has he saved in Public Provident Fund ?
One’s digit of the number (22)^23 is
Oranges are bought at 7 for rupees 3. At what rate per hundred must they be sold to gain 33%?
Out of 10 teachers of a school, on teacher retires and in place of him a new teacher 25 years old joins. As a result of it average age of the teachers reduces by 3 years. Age of the retired teacher ( in years) is :
Out of 10 teachers of a school, one teacher retires and at his place a new teacher of age 25 years joins. As a result of it, the average age of the teachers is reduced by 3 years. The age of the retired teacher is
Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed?
Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expenditure of all the nine. The total money spent by all of them was-
Out of four number, the average of first three is 15 and that of the last three is 16, if the last number is 19, the first is ?
