Question
Buses A and B are moving around a circular ground of
radius 350 m. If the speeds of the buses A and B are 11 m/sec and 20 m/sec respectively, then what is the difference between the time taken by bus A and B to complete 2 round of the ground?Solution
Circumference if the ground = 2πr = 2 × 22/7 × 350 = 2200 m So, distance = 2200 m Time taken by bus A to cover 2 rounds of a ground = (2200/11) × 2 = 400 Time taken by bus B to cover 2 rounds of a ground = (2200/20) × 2 = 220 Required difference = 400 – 220 = 180
A, B and C enter into a partnership, A invest X + 9000, B invest X + 6000 and C invest X + 7500 for one year if B share is 30000 from total profit of 90...
P started a business investing Rs.9000. After 3 months, Q joined her with the capital of Rs.16000. After another 6 months, R joined them with the capita...
- In a firm, P, Q, and R invested Rs. 1500, Rs. 1800 and Rs. 2100 respectively. After 6 months, P withdrew Rs. 300, Q withdrew Rs. 800 and R withdrew Rs. 600...
- ‘P’ and ‘Q’ invested Rs. 7200 and Rs. 4800 respectively for 9 months and 15 months. P kept 35% of his profit and donated the rest. His remaining pr...
Raj invested Rs.40000 in a business. After 6 months, Rohan joins him with an investment of Rs.P. If at the end of the year the profit is Rs.60000 and pr...
Rajni borrowed Rs. 1,500 from a bank and repaid the entire amount with interest in two equal annual installments, the first instalment being paid a year...
A invests half of the amount invested by B. B left after 4 months. C joins them with the capital of X Rs in a month after B had withdrawn from the busin...
‘Neha’ invested Rs. 3000 in a business. ‘Ravi’ joined ‘x’ months after ‘Neha’ with an investment of Rs. 2500. If at the end of the year,...
A, B and C started a business with initial investments in the ratio 4:5:3, respectively. After one year A, B and C made additional investments equal to ...
- 'A' and 'B' entered into a partnership where 'A' invested Rs. 1,500 more than 'B'. 'A' stayed in the business for 8 months, while 'B' stayed for the entire...
