The price of raw materials has gone up by 15%, labour cost has also increased from 25% of the cost of raw material to 30% of the cost of raw material. By how much percentage should there be a reduction in the usage of raw materials so as to keep the cost same?

Mr. A is a computer programmer. He is assigned three jobs for which time allotted is in the ratio of 5 : 4 : 2 (jobs are needed to be done individually). But due to some technical snag, 10% of the time allotted for each job gets wasted. Thereafter, owing to the lack of interest, he invests only 40%, 30% and 20% of the hours of what was actually allotted to do the three jobs individually. Find how much percentage of the time invested by A.

In the Mock CAT paper at Mindworkzz, questions were asked in five sections. Out of the total students, 5% candidates cleared the cut-off in all the sections and 5% cleared none. Of the rest, 25% cleared only one section and 20% cleared four sections. 24.5% of the entire candidates cleared two sections and 300 candidates cleared three sections, find out how many candidates appeared at the Mock CAT at Mindworkzz?

There are three galleries in a coal mine. On the first day, two galleries are operative and after some time, the third gallery is made operative. With this, the output of the mine became half as large again. What is the capacity of the second gallery as a percentage of the first, if it is given that a four-month output of the first and the third galleries was the same as the annual output of the second gallery?

10% of salty sea water contained in a flask was poured out into a beaker.

After this, a part of the water contained in the beaker was vapourised by heating and due to this, the percentage of salt in the beaker increased \(4\) times.

If it is known that after the content of the beaker was poured into the flask, the percentage of salt in the flask increased by \(x\%\).

Find the original quantity of sea water in the flask.

(a) \( \dfrac{9M+1\%}{M-1} \)

(b) \( \dfrac{(9M+1)x\%}{M-1} \)

(c) \( \dfrac{9M-1x\%}{M+1} \)

(d) \( \dfrac{9M+x\%}{M+1} \)

In an election of 3 candidates A, B and C, A gets 50% more votes than B. A also beats C by 1,80,000 votes. If it is known that B gets 5 percentage point more votes than C, find the number of voters on the voting list given 90% of the voters on the voting list voted and no votes were illegal.

A clock is set right at 12 noon on Monday. It loses 1/2% on the correct time in the first week but gains 1/4% on the true time during the second week. The time shown on Monday after two weeks will be

The petrol prices shot up by 7% as a result of the hike in the price of crudes. The price of petrol before the hike was ₹ 28 per litre. Vawal travels 2400 kilometres every month and his car gives a mileage of 18 kilometres to a litre. Find the increase in the expenditure that Vawal has to incur due to the increase in the price of petrol (to the nearest rupee)?

For Question 8, by how many kilometres should Vawal reduce his travel if he wants to maintain his expenditure at the previous level (prior to the price increase)?

In Question 8, if Vawal wants to limit the increase in expenditure to ₹ 200, what strategy should he adopt with respect to his travel?