Mathematics & Logic
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286
If a : b = c : d, then (ma + nc) : (mb + nd) is equal to:
Hard
Mathematics & Logic
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287
Find the mean proportional between 6 and 54.
Easy
Mathematics & Logic
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288
If (a + b) : √(ab) = 4 : 1, then a : b is:
Hard
Mathematics & Logic
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289
The ratio of incomes of A and B is 5 : 4 and the ratio of their expenditures is 3 : 2. If each saves ₹1,600, find the income of A.
Medium
Mathematics & Logic
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290
The third proportional to (a² - b²) and (a - b) is:
Hard
Mathematics & Logic
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291
A mixture contains milk and water in the ratio 5 : 1. On adding 5 liters of water, the ratio becomes 5 : 2. Find the quantity of milk in the mixture.
Easy
Mathematics & Logic
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292
If ₹1,210 is divided among A, B, and C so that A : B = 5 : 4 and B : C = 9 : 10, then what is C's share?
Medium
Mathematics & Logic
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293
If 7 : x :: 35 : 45, then find the value of x.
Easy
Mathematics & Logic
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294
The ages of A and B are in the ratio 3 : 1. After 15 years, the ratio will be 2 : 1. Find their present ages.
Medium
Mathematics & Logic
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295
A sum of ₹1,300 is divided among A, B, C, and D such that A/B = B/C = C/D = 2/3. Find A's share.
Hard
Mathematics & Logic
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296
If x : y = 5 : 2, then find the value of (8x + 9y) : (8x + 2y).
Easy
Mathematics & Logic
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297
If x : y = 4 : 7 and y : z = 5 : 9, then find the value of x : y : z.
Easy
Mathematics & Logic
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298
If (x + y) : (x - y) = 11 : 1, then the value of (x² + y²) : (x² - y²) is:
Hard
Mathematics & Logic
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299
A container contains 40 liters of milk. From this, 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?
Hard
Mathematics & Logic
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300
If A : B = 1/2 : 3/8 and B : C = 1/3 : 5/9, then A : B : C is:
Easy
Mathematics & Logic
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