60% of a number is 90 what is 50% of that same number

What does estimate the quotation mean

t takes 34 minutes for 6 people to paint 6 walls. How many minutes does it take 18 people to paint 18 walls

What is the imaginary part of the number 9?

Theo gets 2 stars for every 5 correct answers he gives. What is the minimum number of correct answers Theo must give if he wants 12 stars?

A study of two hundred teens found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 12 hours. The population standard deviation is 4 hours.

You roll 2 number cubes whats the probability of it being 7

What is the cube root of 27a^12

Your boss gives you $10000 and wants to know how many bananas you can afford. The only banana dealer in town sells bananas at a starting price of $1, but for each subsequent banana he adds 1% to the price of the previous banana you purchased.

David orders a total of 15 bags of wood that weigh a total of 63.75 lb. how much does one bag of wood weigh?

Sam packed 42kg of rice into one big bag and 6 small ones which are of the same size. the big bag contained 3/7 of the rice. how many kilograms of rice did each small bag contained?