[Food Safety Officer, 2020]

1. The difference between two numbers is 10 and one-fifth of their sum is equal to 8. Find the smaller number.

[Food Safety Officer, 2020]

2. An article is sold at a profit of 20%. If the cost price is increased by 10% and the sale price by Rs.26, then the percentage of profit reduces by 5%. Determine the cost price.

[Food Safety Officer, 2020]

3. Two pipes A and B can fill a tank in 20 and 30 hours respectively, both the pipes are opened to fill the tank but when the tank is one-third full, a leak develops in the tank through which one-third water supplied by both the pipes goes out. The total time taken to fill the tank is:

[Food Safety Officer, 2020]

4. 8 men can complete a piece of work in 20 days. 8 women can complete the same work in 32 days. In how many days will 5 men and 8 women together complete the same work?

[Food Safety Officer, 2020]

5. A train travels a distance of 600 km at a constant speed. If the speed of the train is increased by 5 km/hr, the journey would take 4 hours less. Find the speed of the train.