UP SI MATHS QUIZ-23

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Question 1:

If the volumes of two right circular cones are in the ratio $4: 1$ and their diameters are in the ratio $5: 4$, then the ratio of their heights is:

Question 2:

The number 36 is increased by a certain percentage and becomes 63. Calculate that percentage.

Question 3:

A number is divided in the ratio $9: 5$. When 8 is added to each number, the ratio becomes $5: 3$, which of the two will be the largest number?

Question 4:

A sum of ₹7,500 amounts to ₹8,748 after 2 years at a certain rate per cent per annum compounded annually. What will be the simple interest (in ₹) on the same sum for 3 years at double the earlier rate?

Question 5:

Shilpa covered the distance at a speed of $20 \mathrm{~km} / \mathrm{h}$ for 3 hours and the same distance at a speed of $15 \mathrm{~km} / \mathrm{h}$. Find the average speed (in $\mathrm{km} / \mathrm{h}$ ) of Shilpa.

Question 6:

18 trainees can do the same work as 8 experts in a day. It takes 12 experts and 9 trainees 8 days to build a pond. How many experts along with 5 trainees would be required to build the same pond in 9 days?

Question 7:

The value of $12 \times[(9-4) \div\{(8 \div 8$ of 4$)+(4 \div 4$ of 2$)\}]$ is:

Question 8:

The shopkeeper gives discount of $20 \%$ and sold it at Rs.748. The ratio of marked price and cost price is $187: 100$. If he gives a discount of $25 \%$ instead of $20 \%$ then what amount of profit he would have earned?

Question 9:

The ratio of the sum to the LCM of two natural numbers is $7: 12$. If their HCF is 4 , then the smaller number is :

Question 10:

The average marks obtained by 40 students of a class is 86 . If the 5 highest marks are removed, the average reduces by one mark. The average marks of the top 5 students is