Question
Train ‘A’ travelling with a speed of 75 km/h can
cross a pole in 15 seconds. If the length of train ‘B’ is 24% less than that of train ‘A’ and it can cross a pole in 15 seconds then speed (in km/h) of train ‘B’ is:Solution
Speed of train ‘A’ = 75 × (5/18) = (125/6) m/s Length of train ‘A’ = (125/6) × 15 = 312.5 metres Length of train ‘B’ = 0.76 × 312.5 = 237.5 metres Speed of train ‘B’ = (237.5/15) × (18/5) = 57 km/h
A and B started a business in partnership by investing the capital of Rs. 35000 and Rs. 40000 respectively. After six months, C also joined them with s...
A and B together started a business by investing their capital in the ratio of 10:9, respectively and total amount invested by them together is Rs. 2850...
A, B and C started a business together. A invested Rs. 60000 for the whole year. B invested Rs. 80000 for the first 4 months and then increased his inve...
A and B invests Rs. (X-1200) and (X+1800) in a business respectively. Investment period of both of them was same. If the total profit is Rs. Y and profi...
A and B entered into a business investing Rs. (x + 60) and Rs. (x – 55) respectively. After one year they invested Rs. 120 more and Rs. 150 more respe...
- Two friends, R and S, started a venture where R’s capital was Rs. 2,000 more than S’s. R withdrew his investment after 10 months. If the ratio of their...
Three partners ‘A’, ‘B’ and ‘C’ started a business by investing in the ratio 4:6:7 respectively and the ratio of time for which they made th...
X and Y started a business by investing Rs. 30000 and Rs. 20000 respectively. After 6 months, Z joined with an investment of Rs. 25000. At the end of on...
Three partners ‘A’, ‘B’ and ‘C’ started a business by investing in the ratio 3:4:2 respectively and the ratio of time for which they made th...
A and B enter into partnership. A invests some money at beginning, B invests thrice the amount after 7 months and C invests double the amount after 3 mo...
Relevant for Exams:
