Question
The average of 15 numbers is 84. The first seven numbers
and the last five numbers have averages of 92.5 and 72.5, respectively. The ninth number exceeds the eighth number by 20%, and the tenth number is reduced by (50/9)% from the ninth number. Determine the value of the ninth number.Solution
Let eighth number is 10x So, ninth number = 1.20 Ă 10x = 12x Tenth number = 850/9 Ă 1/100 Ă 12x = 34x/3 So, 10x + 12x + 34x/3 = 84 Ă 15 â 7 Ă 92.5 â 5 Ă 72.5 = 250 Or, 100x/3 = 250 Or, x = 7.5 So, ninth number = 12 Ă 7.5 = 90
Which of the following is the code for âall are manâ ?
In a certain code language, TAMARIND is written as SCLCQKMC. How will WIRELESS be coded in that language?
Who among the following person lives on the floor immediately above U?
What is the code of 'president'?
In a certain code language, RIVER is coded as QHTFS and MAGMA is coded as LZENB. In the same code language, how will TOWER be coded as?
In a certain code language SHIRT is written as TJLVY. What will be the code for YEARS in the same code language ?Â
In a certain code language, HAMMER is coded as 5 and MINOR is coded as 135. What is the code of word âDANCINGâ in the same coding language?Â
...Which of the following is the code for ‘test love alike’?
If the phrase âgroup medalâ is coded as âclm olmâ then what might be the code for the phrase âactually medalâ?
...In a certain code language, âSKETCHâ is written as âTJFSDGâ. What will be the code for âWARMERâ in that code language?Â
...
Relevant for Exams:
