A man deposited a sum of money in a bank at the rate of 6 % per annum for 4years. If he received an interest of Rs 1,440, how much money did he deposit in the bank?
pls give an explanation as well

Aphrase is shown read the phrase and give me the answer

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Jaxon has s packs of 8 crazy straws. he divided the crazy straws into 2 equal bags. now, he has 224 crazy straws in each bag. how many packs of crazy straws did jaxon start with?