Q) The cost of manufacturing a car is made up of three items: cost of material, labour and overheads. In a year, the cost of these items were in the ratio 4:3:2. Next year, the cost of material rose by 10%, cost of labour increased by 8%, but the overheads reduced by 5%. Find the increase per cent in the price of the car. (ans is increase in price of car in percent = 44/9%)thanks in advance : )
old ratio 4:3:2 new ratio 1.1*4:1.08*3:.95*2 =>4.4:3.24:1.80 so change in cost is (4.4+3.24+1.90)-(4+3+2) = .54 %age change is .54*100/(4+3+2)=54/9=6%
@Raghu5jan Let 1g=1 Re so he makes a profit of rs 80 on rs 920 worth article and also above that he has marked the price 15 % more so his final SP = 1.15 x (1000/920) x CP so his profit % = [1.15 x (1000/920) - 1] x 100 (sorry dnt feel like doing the calculations 😁 )
A trader uses a weight 920 g instead of 1 kg and sells the articles at the marked price which is 15% above the cost price..Find the profit percentage
let 1000gm = Rs 1000 (since price is not given) now profit when selling at selling price is 15% of 1000 = 150 and he sells 920gm instead of 1000gm or he sells item costing Rs 920 at 1150 so total profit is (150+80)/920= .25 25%
let 1000gm = Rs 1000 (since price is not given)now profit when selling at selling price is 15% of 1000 = 150and he sells 920gm instead of 1000gm or he sells item costing Rs 920 at 1150so total profit is (150+80)/920= .2525%
@ramirez@Raghu5jan This can be solved in a easier way. Since the speed is reduced by 1/8, the time would increase by 1/7, which is equal to 15 min. hence the actual time taken is 15 * 7 min or 7/4 hrs. Multiply this by the speed (40) and u wud get the answer 70 km!!
A cask contains 12 gallons of mixture of wine and water in the ratio 3:1. How much of the mixture must be drawn off and water substituted, so that wine and water in the cask become half and half. Thanks in advance 😃