Mathematics & Logic
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181
If a : b = c : d, then which of the following is correct by 'Invertendo'?
Easy
Mathematics & Logic
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182
A bag contains coins of 1 Rupee, 50-paise and 25-paise in the ratio 5 : 6 : 8. If the total amount in the bag is ₹210, find the number of 1 Rupee coins.
Hard
Mathematics & Logic
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183
The ratio of the numbers of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
Medium
Mathematics & Logic
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184
If a/b = 2/3 and b/c = 4/5, then (a+b)/(b+c) is:
Medium
Mathematics & Logic
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185
The ratio of incomes of two persons is 9 : 7 and the ratio of their expenditures is 4 : 3. If each of them saves ₹2000 per month, find their monthly incomes.
Hard
Mathematics & Logic
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186
If A/2 = B/3 = C/4, find A : B : C.
Easy
Mathematics & Logic
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187
Divide ₹1162 among A, B, C such that A : B = 35 : 28 and B : C = 20 : 25. Find B's share.
Medium
Mathematics & Logic
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188
Divide ₹600 among A, B and C such that A's share is ₹40 more than B's and ₹20 more than C's. Find the ratio of their shares.
Hard
Mathematics & Logic
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189
If (a + b) : (b + c) : (c + a) = 6 : 7 : 8 and (a + b + c) = 14, then find the value of c.
Hard
Mathematics & Logic
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190
If 0.75 : x :: 5 : 8, then find the value of x.
Easy
Mathematics & Logic
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191
The ratio of copper and zinc in an alloy is 9 : 4. If there is 24 kg of copper, find the weight of zinc in the alloy.
Medium
Mathematics & Logic
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192
If a : b = 5 : 7 and c : d = 2a : 3b, then find ac : bd.
Medium
Mathematics & Logic
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193
The ratio of the sides of a triangle is 1/2 : 1/3 : 1/4 and its perimeter is 104 cm. The length of the longest side is:
Medium
Mathematics & Logic
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194
If x/y = 3/4, then (7x + 3y) / (7x - 3y) is:
Easy
Mathematics & Logic
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195
Find the compounded ratio of 2 : 3, 6 : 11 and 11 : 2.
Easy
Mathematics & Logic
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