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Let the candle height is 1 meter. Let the required time =‘t’ hours In 10 hours first candle lighted = 1 So in 1 hour first candle lighted = t/10 After ‘t’ hours remaining first candle = (1 - t/10) Similarly, After ‘t’ hours remaining second candle = (1 - t/8) So the ratio between the first and second candle after being lighting = ((1 - t/10))/((1 - t/8)) = 4/1 1 - t/10 = 4 - (4t)/8 t/2 - t/10 = 4 – 1 (5t - t)/10 = 3 T = 15/2 hours or 7 hours 30 minutes
Three different positions of the same dice, which has numbers 82, 83, 84, 85, 86 and 87 are shown. Select the number that will be on the face opposite t...
A boy pointing to a woman said, "She is the sister of my grandmother's only son-in-law." What is the relation between that boy's sister?
A, B, C, D, E, F and G are of different heights. A is shorter than only two people. D is taller than only B. F is taller than A but shorter than G. C is...
Read the given statement and conclusions carefully. Assuming that the information given in the statement is true, decide which of the given conclusions ...
Select the set in which the numbers are related in the same way as are the numbers of the given set.
(NOTE: Operations should be performed on the...
If digit 2 is interchanged with digit 1, then what will be the value of the following equation?
9 + 6 ÷ 4 × 21 – 5=?
Six friends P, Q, R, S, T, and U are sitting around a circular table facing away from the center. U sits exactly between R and S. S sits to the immediat...
Select the option that is embedded in the given figure as its part (rotation is NOT allowed).
Which figure should replace the question mark (?) if the following figure series were to be continued?
Three of the following pairs of letters follow a certain rule/logic/relation and hence are alike in a certain way. Select the incongruous one from the g...
