SSC GD 30th Jan 2023 Shift 1

There are 75 boys and 45 girls in a class. If the average weight of boys is 60 kg and the average weight of girls is 40 kg, then find the average weight of the whole class.

Find the volume of a hemisphere of diameter 12 cm (Use $$\pi = \frac{22}{7}$$)

Simplify the following expression.
$$[7 \div 2 \times (8.35 + 1.3 + 2.42)]$$

The speed of a swimmer in downstream is 23km/h. If the speed of the swimmer in upstream is 14 km/h, then what is the speed of the stream?

The population of a village increases by 0.2% in the first year, it increases by 0.4% in the second year, and due to some disease, it decreases by 0.4% in the third year. What will be its population after 3 years, if in the beginning of the first year it was 2000 (rounded off to two decimal places)?

A certain number is subtracted from each of the numbers 20,24 and 29. After subtraction, those numbers are in proportional. What is the number subtracted?

A car travels $$\frac{1}{3}$$ of the distance on a straight road at a speed of 10 km/h, the next $$\frac{1}{3}$$ at a speed of 20 km/h and the last $$\frac{1}{3}$$ at a speed of 60 km/h. Find the average speed of the car.

P and Q together can do a job in 15 days. P is thrice as efficient as Q. In how many days can P alone do the job?

On a tool whose marked price is Rs.280, a discount of 15% is offered. Due to a calculation mistake, the shopkeeper gives the customer Rs.20 extra. What is the effective discount percentage on the tool for the customer?

The monthly income of a person was ₹15,400 and his monthly expenditure was ₹7,200. His income increased by 20% and his expenditure increased by 5%. Find the percentage increase in his savings.