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Quantitative Aptitude Quiz For RRB PO Mains 2021- 31st August

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Q2.There is two vessels A and B. Vessel A & B contains the mixture of milk, mango juice and water in the ratio of 8 : 5 : 3 & 6 : 5 : 2 respectively. If both vessels are mixed respectively in the ratio of 16 : 13 into another vessel C then the total quantities of mango juice in vessel C will be 20 liters. Find the difference between the quantity of milk and water in vessel C?
(a)15 liters
(b)10 liters
(c)18 liters
(d)25 liters
(e)20 liters

Q3. Satish saved 55% of his monthly income, which he further invested in two different schemes A & B in the ratio of 7 : 5 on CI compounded annually at the rate of 10% p.a. and 20% p.a. respectively. If after two years, Satish gets total interest of Rs. 8074 from both the schemes, then find the total annual saving of Satish?
(a)316,600 Rs.
(b)316,400 Rs.
(c)316,000 Rs.
(d)316,200 Rs.
(e)316,800 Rs.

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Q5. Satish, Veer and Neeraj entered into a business by investing in the ratio of 4 : 6 : 3. After two years, Satish and Veer withdrew 25% and 33⅓% of their respective initial investment, while Neeraj added 50% of his initial investment more. If at the end of three years they received total profit of Rs. 93750, out of which 22.5% are used for maintaining business and the remaining profit was divided among them according to their investment ratio. Find difference between profit share of Satish and Neeraj?
(a)978.75 Rs.
(b)976.75 Rs.
(c)974.25 Rs.
(d)968.75 Rs.
(e)966.75 Rs.

Q6. A boat has to travel from point P to point Q in upstream and reach Q by 5.00 PM. If boat starts form point P at 2.00 PM with the speed of 20 km/hr and after travelling one hour the speed of current is increased by 25% of its initial speed. If distance from point P to Q is 36 km and speed of current is 8 km/hr, then find by what percent boat has to increase its speed to reach point Q in time?
(a)5%
(b)15%
(c)12%
(d)10%
(e)17.5%

Q7. Veer and Sameer alone can do 25% & 33⅓% of a task in 16 days individually. If Sameer & Satish together can do same task in 16 days, then find in how many days Veer, Sameer and Satish will complete the whole task, if they do it on alternate days, starting with Satish and followed by Sameer & Veer respectively?
(a)38 days
(b)42 days
(c)36 days
(d)32 days
(e)30 days

Q8. Veer bought some Shirts & some Jeans from a store. The marked price of a shirt and a jeans is in the ratio 5 : 7 and store allows discounts of 20% and 25% on the shirt & the jeans respectively. The ratio between number of shirt and jeans bought by Veer is 9 : 8. Veer marking up the prices of both by 50% on the price at which he bought and sells each shirt and jeans bought by him at discounts of 25% and 20% respectively. If Veer gives one 1 shirt free for every 4 jeans bought by a customer, then what is the net profit made by Veer after selling all of the items which he bought from the store?
(a)2%
(b)7%
(c)6%
(d)5%
(e)8%

Q9. Ratio between length of two trains A & B is 3 : 4 and both the trains are running at the speed of 81 km/hr and 108 km/hr respectively. If both the trains are running in opposite direction, they crossed each other in 8 sec, then find in what time both trains will cross each other when running in same direction?
(a)48 sec
(b)56 sec
(c)44 sec
(d)42 sec
(e)40 sec

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