For the following questions answer them individually
The value ofÂ
$$3 \div 21 of 3 \times 7 + 24 \times 6 \div 18 - 3 \div 2 + 3 - 2 + 2 \times 3 \div 6$$ is:
A shopkeeper wrongly calculates his profit on the selling price of an article and finds it to be 40%. What is his actual profit percentage?
A reservoir is in the shape of a frustum of a right circular cone. The radii of its circular ends are 4 m and 8 m and its depth is 7 m. How many kiloliter of water (correct up to one decimal place) can it hold?
(Take $$\pi = \frac{22}{7}$$)
The diameter of a wheel is 70 cm. It completes 600 revolutions in 1 minute. The speed, in km/h, of the vehicle is:(Take $$\pi = \frac{22}{7}$$)
The compound interest on a certain sum at 15% p.a. compounded yearly for $$2\frac{1}{3}$$ years is ₹9327. The sum is:
When x is added to each of 8, 14, 20 and 30, then the numbers, so obtained,in this order form a proportion. What is the mean proportional between $$(x - 2) and (7x + 2)$$?
The average weight of 60 students in a class is 56.4 kg. If 12 students having average weight 59.5 kg leave the class and 15 students having average weight 54 kg join the class, then what is the average weight (in kg) of the students in the class (correct to one decimal place)?
A is more efficient than B and they together can complete a work in 24 days. Had A done 50% of the work and then B, the remaining work, then the work would have been done in 50 days. B alone will complete 40% of the same work in:
The speed of a train is 3 times that of a car and 1.5 times that of a steamer. A person travelled by x km by steamer, 3.75 x km by train and $$\frac{x}{2}$$ km by car. If the speed of the car is 40 km/h and total time take by him is $$4\frac{1}{2}$$ hours, then the total distance traveled by him in three modes is:
The value of
$$3\frac{1}{5} \div 4\frac{1}{2} of 5\frac{1}{3} - 2\frac{1}{3} of \left\{\frac{3}{7} - \left(1\frac{4}{15} - \frac{13}{30}\right) \times 1\frac{1}{5}\right\}$$ is:
