How many nos less than 100 can be expressed as a sum of two consecutive nos. in only one way?
in what ratio should ram mix three types of rice worth Rs 12 Rs 14 and Rs 16 per kg such that the resultant rice is worth Rs 15 per kg
Two alloys contain tin and brass in the ratio 3:5 and 3:2. 24kg of the first alloy and 10kg of the second alloy and some amount of pure tin are melted and mixed. If the resultant alloy has 50% tin find the weight of the new alloy?
Happy Diwali to all.👍
A barrel contains a mixture of spirit and water in the ratio 3:2 by adding 15 litres of water the ratio gets reversed and the barrel becomes full what is the capacity of the barrel in litres
Kailash spilled half the contents of a glass of orange juice. He then filled the half-full glass with water. After drinking one-fourth of the diluted orange juice from the glass, he realized that the orange juice was too diluted and he filled the glass to the top with double strength orange juice. Then the ratio of the final concentration of the juice to the original concentration of juice in the glass is.......
Three cylinders of equal capacities contain mixture of nitrogen and oxygen in the ratios of 8:3, 7:4 and 6:5 respectively. If the contents of the three cylinders are emptied into a large cylinder what is the ratio of oxygen and nitrogen in it?
In Δ ABC, if E divides AB in the ration 3:1 and F divides BC in the ratio 3:2, find the ratio of the areas of the Δ BEF and Δ ABC.
P.s in the solution apparently two perpendiculars were drawn from points A and E and these were in the ratio 4:1 (in that order), I still could not comprehend it really. Hope someone can solve this. Thank you.
Ans: 3:20
Two vessels contain equal quantities of milk and water. 100 ml of milk is poured from the first vessel into the second vessel containing only water. Then 100 ml of the mixture in the second vessel is poured in the first vessel. If the same procedure is repeated infinitely what is the final ratio of milk and water in the mixture in the second vessel
The Ratio of milk : Water is 6:4 after adding 3 L of milk the ration is now 7:4
Find the quantity of milk and water initially.
Kalicharan gets some coins made of an alloy of gold and silver. The alloy with a weight of 100 gm contains 20% of gold. What piece of another gold-silver alloy containing 60% of silver must be alloyed with the first piece of alloy in order to obtain a new alloy with the 32% of gold?
1. 150 gm
2. 120 gm
3. 140 gm
4. 42.8 gm
5. None of these
P and Q are two different mouth fresheners, prepared by mixing the supari and saunf in the proportion 9 : 4 and 9 : 17 respectively. If equal quantities of the mouth fresheners are mixed to form a third kind of mouth freshener R, find the ratio of saunf and supari in R.
1. 27 : 25
2. 25 : 27
3. 13 : 9
4. 15 : 27
5. 18 : 21
One alloy of metal contains 90% copper and 10% tin. Another alloy contains 93% copper and 4% tin. Later they are mixed, so that the mixture may contain 9% of tin. What per cent of copper will it contain?
1. 75.5%
2. 80.5%
3. 85.5%
4. 90.5%
5. None of these
A natural number N has 'k' distinct prime factors. If the total number of factors of N is 72, then what
is the product of all the possible values of k?
(a) 180
(b) 60
(c) 24
(d) 120
log (x + 16/x) >1 , what is the range of x?
4
x 8
0 8
The distance between A and B is 19 km. A cyclist starts from A at a constant speed towards B. A car leaves from A 15 min later in the same direction. In 10 min it catches up with the cyclist and continues towards B; after reaching B, it turns around and in 50 min after leaving, car encounters the cyclist the second time.
Share your approach as well
The speed of the cycle is:
a. 12 km/hr
b. 14 km/hr
c. 18 km/hr
d. 10 km/hr
The ratio of milk and water is 3 : 2. If 10 liters of water is added to it, the ratio gets reversed. What is the amount of the total mixture now?
1. 10 liters
2. 20 liters
3. 24 liters
4. 30 liters
5. 40 liters
can any 1 explain how to find out integral solution for a quadratic equation???
for example
x+y=x^2+y^2-xy
Easy one !
How many kg of tea worth Rs 25 per kg must be blended with 30 kg of tea worth Rs 30 per kg so that by selling the blended variety at Rs 30 per kg there should be a gain of 10%
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(1/root 2 + 1/ root 3 + 1/root 5+ 1/root 7+....) find the sum of the first 10 terms of the series