If 3x + 5y + 7z = 49 and 9x + 8y + 21z = 126, then what is the value of y?
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If 4/5th of 6/7th of a number is 216, then 8/9th of that number will be
Solve : 8,23,199.98 × 99.92 = ? × 80,000
Average of two numbers is 8 and average of other three numbers is 3 ; the average of the five numbers is
The smallest angle of a triangle is 40° less than the largest angle. If the largest angle is 80°, then find the third angle of the triangle
Two water-squash mixtures, the first having a water-to-squash ratio of 4 : 1 and the other having a ratio of 3 : 1, are blended in the ratio 1 : 2. What is the water : squash ratio in the blend?
x and y are two numbers such that their mean proportion is 9 and third proportion is 243. What is the value of x and y?
tan x = 1
then x = 45
2sin x. cos x = 2× 1/√2 x 1/√2 = 1
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