Question
A person covers 1/4 of his journey at the speed of 25
km/h,1/2 of the journey at 40km/h and the remaining at the speed of 50 km/h. Find his average speed per hour for the whole journey (in km/h).Solution
Let the total distance be 4 units (LCM of 4 and 2) A person covers a distance with a speed of 25 km/hr. = 1/4 x 4 = 1 unit A person covers a distance with a speed of 40 km/hr. = 1/2 x 4 = 2 unit Remaining Distance = 4-1- 2 = 1 unit Average Speed = 4/ (1/25 +2/40+1/50) =4/ (8+10+4)/200 =800/22 =36(8/22) =36(4/11) km/h
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
`1804/898-:99/699xx749/751=?`
(√845 ×19.932+ √4230 ×14.385)/(√1765 ×4.877 ) = ?
Direction: Please solve the following expression and choose the closest option
`(13.022)^(2)+ (42.93)^(2)-(53.125)^(2)+(192.33xx14.88)=?- (88.44)^(2)- (42.03 xx 23.12)`
√49 + 6.66% of 1725 + 22² = ?² - √361Â
What approximate value will replace the question mark (?) in the following?
? =...
? = 49.97% of 38.09% of 1998.95
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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