C26 PRACTICE 1

On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:

• Rs. 45

• Rs. 50

• Rs. 55

• Rs. 60

The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:

• 4.37%

• 5%

• 6%

• 8.75%

In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is of the number of students of 8 years of age which is 48. What is the total number of students in the school?

• 72

• 100

• 80

• 120

• 150

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?

• 76 kg

• 76.5 kg

• 85 kg

• Data inadequate

• None of these

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:

• 17 kg

• 20 kg

• 26 kg

• 31 kg

A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is Rs. 855, the total profit is:

• Rs. 1425

• Rs. 1500

• Rs. 1537.50

• Rs. 1576

Arun, Kamal and Vinay invested Rs. 8000, Rs. 4000 and Rs. 8000 respectively in a business. Arun left after six months. If after eight months, there was a gain of Rs. 4005, then what will be the share of Kamal?

• Rs. 890

• Rs. 1335

• Rs. 1602

• Rs. 1780

Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Anand's present age in years?

• 24

• 27

• 40

• Cannot be determined

• None of these

Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age?

• 1 year

• 2 years

• 25 years

• Data inadequate

• None of these

A and B together have Rs. 1210. If 4/15 of A's amount is equal to 2/5 of B's amount, how much amount does B have?

• Rs. 460

• Rs. 484

• Rs. 550

• Rs. 664