Question
The sum of three numbers is 189. If the ratio of the
first to the second is 3:4 and that of second to the third is 5:7 then the second number is?Solution
Let the three numbers be A, B and C. Now, A:B = 3:4 & B:C = 5:7 A: B: C = 15:20:28 A+B+C = 189 15k + 20k + 28k = 189 63k = 189 k = 3 Second number = B = 20 x 3 = 60
If sin⁴ x + cos⁴ x = 5/8, then the value of sin2x is
Aman invested Rs. 13,000 in a scheme offering simple interest of 20% p.a. For how many months should he keep his money invested in the scheme if he wish...
2, 5, 16, 65, ?, 1957
-Constable/1727247429-57.JPG)
Two cars, A and B, are traveling in the same direction on a highway. The ratio of their speeds is 3:4. If both cars increase their speeds by 15 km/h, th...
A share is to be distributed among A, B, C, D in the ratio 7 : 5 : 4 : 2. If C gets Rs 500 more than D, what will be the share of B?
Let A represent the sum of the two smallest prime numbers. Let B be the average of the largest and second-largest two-digit prime numbers. Determine the...
(32) -3/5 = ?
A merchant mixes two varieties of rice, one costing ₹55 per kg and the other costing ₹80 per kg, and sells the mixture at ₹75 per kg, making a pro...
