UP SI MATHS QUIZ-53

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Question 1:

A mobile seller has two mobiles. The cost price of first mobile is $30 \%$ more than that of another mobile. He sold cheaper mobile at $27 \%$ profit. At what $\%$ of profit he should sell costlier mobile so that he may gain overall $40 \%$ profit.

Question 2:

6 years ago, Mamta's age was 18 years more than her son's age. If sum of their present age is 30 , what was the age of the mother 6 years back?

Question 3:

A, B and C can finish a certain piece of work in 12 days, 15 days and 20 days respectively. They started working alternatively started with A. If today is Monday then on which day of the week work will be finished?

Question 4:

If interest become $\frac{3}{5}$ times of principle in 4 years. Find the rate of interest.

Question 5:

The average age of a group of 10 students was 20 . The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?

Question 6:

Three friends A, B, C invested in a business in the ratio of $2: 3: 4$. After 6 months C withdraw half his capital. If the total profit earned for the year is ₹ 110000 then find the profit earned by C. (in ₹)

Question 7:

The average age of a class of 65 boys was 14 years, the average age of 20 of them was 14 years, and that of another 15 was 12 years. Find the average age of the remaining boys.

Question 8:

When a number is divided by 4,5 & 3 successively it gives remainder 3, 2 and 0 respectively, find the number.

Question 9:

If price of banana increases by $15 \%$, Raman has to pay Rs. $13.50$ extra for a dozen of banana. Find initial price of a banana:

Question 10:

Two boats A and B leave for each other from two place at a distance of $237 \mathrm{~km}$. The speed of boat A and B in still water are $34 \mathrm{~km} / \mathrm{h}$ and $45 \mathrm{~km} / \mathrm{h}$ respectively. If $\mathrm{A}$ is moving with the current and B in the opposite direction, After how much time will they meet each other? (in hour)