Seven years ago the ratio of ages of A and B = 4x : 5x Ratio of Present ages of A and B = 4x + 7 : 5x + 7 After 8 years the ratio of ages of A and B, ⇒ (4x + 7 + 8) : (5x + 7 + 8) = 9 : 10 ⇒ 40x + 150 = 45x + 135 ⇒ 5x = 15 ⇒ x = 3 Sum of present ages of A and B = (4 × 3 + 7) + (5 × 3 + 7) = 41 years ∴ The sum of present ages of A and B is 41 years.
Toxicity of which element leads to the unavailability of iron and zinc
Sand drawn disease in tobacco is caused due to the deficiency of ____
Acidic soils are generally found in the regions of
____ soil is also called as regur soil or the soil in which predominant crop grown is Cotton.
Which metamorphic rock is formed from the alteration of shale?
What is the term for the arrangement of soil particles into clumps or aggregates?
Which of the following is a source of Boron?
The ESP of saline soils is _____%
According to USDA classification of salt affected soils; a soil having EC >4 mmho/cm; ESP >15; pH
Which of the following factors are considered to be the most active in the process of soil formation?
