The average of 100 observations in a study was calculated as 49.7 . Later it was revealed that one of the observations was misread as 64 instead of 94. What will be the correct average ?

An instrument store gives a 10% discount to all students off the original cost of an instrument. During a scho...

If two planes leave the same airport at 1:00 p.m., how many miles apart will they be at 3:00 p.m. if one trave...

What is the sum of 134.679, -45.548 and -67.8807 rounded to the nearest tenths place?

A nurse has to record temperature of patients in Celsius but her thermometer reads Fahrenheit. A patient's tem...

The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet...

Farid can complete a job in 12 hours, and Jibon can complete the same job in 8 hours. Farid starts the job at...