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Ratio Class - 15 (Variation - 2)
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Variation part - 2

## Bharat Gupta is teaching live on Unacademy Plus

U
Sir algebraic twins
Thankyou sir. Your lectures are very easy to understand.
Pawan joshi
10 months ago
hiii
sir, in 5:30 dont we need to covert metre in kilometers...??
Arpit Gupta
2 years ago
okay thankyou sir
Om Shree
2 years ago
but sir, how can we devide in different units
Om Shree
2 years ago
CONFUSION SOLVED SORRY FOR DISTURBACE
sir iska variation ka part 2 me kuch problem aa raha hai sirf black screen dikha raha audio ke sath
sir, the question solved at 5:20, it is asking to find the distance in kilometre and we have found it in metres, not getting this.
1. RATIO AND PROPORTION Class 16 Variation part - 2)

2. If x varies as y directly and as z inversely and x14 when y 10, find z when x a-14/10 49 and y45. b, 10 C. 10/14 d. can't be determined

3. directly and as z inversely and x 14 when y 10 If x varies as y when x 49 and y = 45. a. 14/10 b. 10 find z c. 10/14 d. can't be determined ,

4. Is a varies as b, then a + b2 varies as d. b2

5. Is a varies as b, then a2 +b2 varies as a. a +b b. a b c. a2 d. b2 2 2 2.

6. A precious stone worth Rs 8,112 is broken into three parts having the ratio of 2 5 6. If the price varies as the square of the weight then the loss incurred. a. Rs 4750 b. Rs 5000 c. Rs 4992 d. Rs 4880

7. A precious stone worth Rs 8,112 is broken into three parts having the ratio of 2: 5:6.If the price varies as the square of the weight then the loss incurred. a. Rs 4750 b. Rs 5000 C. Rs 4992 d. Rs 4880 3120

8. The distance of the horizon at the sea varies as the square root of the height of the eye above sea level. When the distance is 14.4 km, the height of the eye is 18 meters. Find, in kilometres, the distance when the height of the eye is 8 meters. . 4.8 km b.7.2 km c.9.6 km d.12 km

9. The distance of height of the eye above sea level. When the distance is 14.4 km, the height of the eye is 18 meters. Find, in kilometres, the distance when the height of the eye is 8 meters. a. 4.8 km b. 7.2 km c. 9.6 km d. 12 km the horizon at the sea varies as the square root of the

10. The weight of a circular disc varies as the square of the radius when the thickness remains the same, it also varies as the thickness when the radius remains the same. Two discs have their thickness in the ratio of 9: 8, the ratio of the radii if the weight of the first is twice that of the second is a. 4:3 b. 5 2 c. 21 d. 1:2