Question
At present, the ages of ‘T’ and ‘U’ are in the
ratio 6:7. Eight years from now, the ratio of their ages will become 7:8. What was T’s age 10 years ago?Solution
ATQ,
Let present ages of T and U be 6x and 7x.
ATQ:
(6x + 8)/(7x + 8) = 7/8
⇒ 8(6x + 8) = 7(7x + 8)
⇒ 48x + 64 = 49x + 56
⇒ x = 8
So, present age of T = 6x = 48 years
T’s age 10 years ago = 48 – 10 = 38 years
Disorders like Hollow Stem of Cauliflower; Browning of Cauliflower ; Top sickness of Tobacco is caused due to the deficiency of
The Indian council of Agricultural Research (ICAR) set up an All India Soil Survey Committee in 1953 which divided the Indian soils into …….. major ...
Which rock type is formed from the cooling and solidification of magma below Earth’s surface?
Which process of soil formation is described as the removal of silica from upper layers, concentrating sesquioxides in the solum, and operates favorably...
The term “operational holding” refers to
Match the following:
1. Soil moisture tension ...
What is the particle density (g/cm³) of clay, as per the document?
The silk fibres are held together in cocoon by a substance known as……………………
The “Law of Maximum” was proposed by:
Which soil-forming factor is classified as "active"?
