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Sum of their present ages = 3 × 27 = 81 Sum of their ages before 10 years = 81-30 = 51 Let their ages 10 years ago were 4x, 6x and 7x Then, 4x+6x+7x = 51 17x = 51 x = 3 their ages 10 years ago were 12, 18, 21 present age of M = 12+10 = 22 present age of N = 18+10 = 28 average of present age of M and N = (28+22)/2 = 25
What is the empirical relation between mean median and mode in positively skewed frequency distribution?
Which pH level in lakes and rivers is likely to negatively impact the reproduction of most fish species?
Which is used in the control of water hyancinth
Cut or excised leaves remain green for long if induced to root or dipped in_____
What is the term for the practice of growing grass or legumes in rotation with grain or tilled crops as a soil conservation measure?
In jute growing areas the usual alternate crop is .......................?
Cyanide blocks
Gram pod borer belong to family :
Moko disease of banana is caused by
The tissue that makes up the bulk of the plant body and performs various functions such as storage and support is called:
