Ques:- the ratio of white balls to black balls is 1:2. if 9 balls are added then the ratio of the balls become 2:4:3. find the number of black balls.
A. 12
B. 6
C. 9
D. none
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Ques:- 2/3 of corckery(plates) are broken, 1/2 have someother thing(handle) broken , 1/4 are both broken and handle broken. Ultimately only 2 pieces of corckery were without any defect. How many crockery were there in total.
Recent Answer : :
let no of total crockery =x
2x/3 crockery broken
x/2 handle broken
x/4 both brocken
2x/3+x/2-x/4 = no of total broken(crockery or handle)
=11x/12
unbroken =x-11x/12=x/12
x/12=2(given in question)
x=24
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C will get RS 95
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Recent Answer : :
( c ) 15 litres
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A. 8 hrs
B. 7 1/2 hrs
C. 7 hrs
D. 9 hrs
Recent Answer : :
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A. Tuesday
B. Wednesday
C. Friday
D. Sunday
Recent Answer : :
Monday
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A. Cousin
B. Sister
C. Aunt
D. Data inadequate
E. None of these
Recent Answer : :
sister
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Recent Answer : :
(3)^ 7.5 ÷ (27)^1.5 x (9)^2 = 3?
⇒(3)^7.5 ÷ {(3)^(3 x 1.5)} x {(3)^(2 x 2)} = 3 ?
⇒ 3^(7.5 – 4.5 + 4) = 3?
⇒ 3^7 = 3?
⇒ ? = 7
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A. 2.4 mph
B. 4 mph
C. 4.8 mph
D. 5 mph
E. None of above
Recent Answer : :
C. 4.8 mph
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these are question tht are seem to be like it consumes
time. so dont see jus the question and run to the next .
ans. a) 12
if 9 balls are added then the ratio to the combination
becomes 2:4:3.
9 balls make the ratio 3 for grey balls in tht mixture.
so the factor is 9/3 = 3 (in tht mixture)
so the same factor has to be maintained through out the
ratio. so black balls is 4 * 3 = 12 and white balls is 2 *
3 = 6.