Start learning 50% faster. Sign in now
We can say that Let present age of 'A' and 'B' be 'x' years and 'y' years respectively. According to question, (x – 6) = (y – 6) – 12 x = y – 12…………………………….(1) And, (x + 12)/(y + 12) = 3/4 4x + 48 = 3y + 36 Putting value of x from equation (1) 4 × (y – 12) + 48 = 3y + 36 4Y – 48 + 48 = 3y + 36 y = 36 years x = 24 years Desired Average = [(36 + 24)/2] = 30 yrs
Which reproductive structure in angiosperms contains the egg-bearing ovule?
For preparation of 1000 mL of 0.1 N potassium dichromate solution (0.1 N N2Cr2O7, atomic mass of K = 39, Cr = 52, 0 = 16), the amount of analytical grad...
Which among the following can be used to prevent post-harvest decay of melons, carrots, potatoes, citrus fruits and accepted as “certified organic” ...
Sorjan system of rice production is followed in ………………….
Which of the following tillage equipment, is a secondary tillage equipment?
Which of the following is the major cause of post-harvest losses in perishable horticultural crops?
Transport in xylem is essentially _____ while in phloem it is _______.
Which is an element of the international environment?
Which model is used for wind erosion estimation?
Pteridophyta are also called: