14-x, 17-x, 34-x and 42-x to be proportional 14-x 34-x ----- = ------- 17-x 42-x =>(14-x)(42-x) = (34-x)(17-x) =>14*42 -56x +x^2 = 34*17 -51x + x^2 =>14*42-34*17 = 5x =>2(294-289) => 10= 5x or x=2 so 12 15 32 and 40 will be proportional.
What least number must be subtracted from 1739 so that the resulting number when divided by 6, 10 and 12 will leave in each case the same reminder 5?
How many kg of salt at 25 paise per kg must be mixed with 50 kg of salt costing 42 paise per kg so that a merchant will get a profit of 30% by selling the mixture at 39 paise per kg?
A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?
In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10%?
