Mathematics & Logic
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256
The ratio of the area of two squares is 16 : 1. The ratio of their perimeters is:
Easy
Mathematics & Logic
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257
Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, they are in the ratio 12 : 23. Find the smaller number.
Medium
Mathematics & Logic
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258
The ratio of the incomes of two persons is 9 : 7 and the ratio of their expenditures is 4 : 3. If each of them saves ₹2,000 per month, find their monthly incomes.
Medium
Mathematics & Logic
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259
If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) is:
Easy
Mathematics & Logic
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260
Divide ₹671 among A, B and C such that if their shares be increased by ₹3, ₹7 and ₹9 respectively, the remainder shall be in the ratio 1 : 2 : 3.
Hard
Mathematics & Logic
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261
If x : y = 3 : 1 and y : z = 2 : 1, then x : y : z is:
Easy
Mathematics & Logic
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262
The ratio of students in three classes is 2 : 3 : 5. If 40 students are increased in each class, the ratio changes to 4 : 5 : 7. Find the total number of students originally.
Medium
Mathematics & Logic
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263
If a/2 = b/3 = c/5, then the value of (a + b + c) / c is:
Easy
Mathematics & Logic
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264
A mixture of 45 liters contains milk and water in the ratio 4 : 1. How much water must be added to make the ratio 3 : 2?
Medium
Mathematics & Logic
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265
If (a + b) : (b + c) : (c + a) = 7 : 8 : 9 and a + b + c = 36, then find the value of a : b : c.
Hard
Mathematics & Logic
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266
The ratio of land to water on the whole Earth is 1 : 2 and in the Northern Hemisphere it is 2 : 3. What is the ratio of land to water in the Southern Hemisphere?
Hard
Mathematics & Logic, Geography
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267
If 30% of A = 0.25 of B = 1/5 of C, then A : B : C is:
Medium
Mathematics & Logic
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268
If x/y = 4/5, then find the value of (4/7 + (2y - x)/(2y + x)).
Medium
Mathematics & Logic
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269
The ratio of the ages of A and B is 4 : 3. After 6 years, their ages will be in the ratio 11 : 9. Find A's present age.
Medium
Mathematics & Logic
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270
The ratio of two numbers is 3 : 4. If their HCF is 4, then their LCM is:
Easy
Mathematics & Logic
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