Question : An isosceles triangle ABC is right angled at B. D is a point inside the traingle ABC. P and Q are the feet of the perpendiculars drawn from D on the side AB and AC respectively of tri ABC. If AP = a, AQ = B and BAD = 15, sin75 = ?
Ans. (rt3a)/2b
soln pls.( mainly how to find angles of the traingle ADQ)
Ram sells rasgolla at rs.15/kg.A rasgolla is made up of flour and sugar mixed in the ratio 5:3.The ratio of price of sugar and flour 7:3.He earns 66 2/ 3% profit .C.P of sugar?
If the cost price of 20 books is equal to Rs. 150 plus the selling price of 15 books, the gain percentage is 10%, then the selling price of 15 books (in Rs.) is?ans 707.14
Everyday a fruit seller sells half his stock ,10% of the stock overnight gets spoiled. If 4627 mangoes rotted over 3 nights then how many did he start with on the 1st day?ans.56000
Three pipes A, B and C are attached to acistern. A can fill it in 10 minutes and B in15 minutes, C is a leak pipe. After openingboth the pipes A and B, a man leaves thecistern and returns when the cistern shouldhave been full. Finding however, that thewaste pipe had been left open, he closes itand the cistern now filled in 2 minutes. Inhow much time pipe C will take to emptythe full cistern?ans.18mins
A,BandCcan do a piece of work in 30days,50days and40 days respectively.IfA isassisted byB on one day and byC on the next day alternatively,then find the time taken by them to finish the work?answer.32/35days
Rohit left A for B at 6 a.m.An hour and a half later vimal,whose speed was 5kmph higher than that of rohit left A.At 10:30 pm on the same day the distance between the two friends was 21 km.speed of vimal?
A milk man mixed 3:4 solution of milk and water with another 1:2 solution of milk and water inthe volume of ratio 3:2.If profit earned by selling the first solution was 20% and the mixture was sold at same price. What is the profit or loss percentage?ans. 31.7%
In some quantity of pure milk costs 3 Rs per litre 4 litre water is mixed . The milkman sold the mixture at C.P and earned 20% profit. Find the quantity of pure milk in the mixture sold ?ans.20
When a cycle manufacturer reduced S. P of cycle by 50%, the no of bicycles sold radically increased by 600%. Initially the manufacturer was getting only 140% profit. Increase of profit %?answer.0%
A mix contain milk and water in the ratio of 8:1.1/5 th part of the mix is taken out & 16 lt water is added then ratio becomes 4:1.Initial amount of mix?
Which is the correct sentence? (A) I have four dozens of mango. (B) I have four dozen of mangoes. (C) I have four dozens of mangoes. (D) I have four dozen of mango.
What are the mistakes of those equally capable students who are out of list just because of available seats are less..??
Are Modi ji lal kile se population policy banao kuch..nhi to without pain marne keliye exam le lo ek..uska bhi cut off high hi jayega..