Class 10R sat a test the mean mark for the test was 70% there are 30 students in class 10 R,20 of whom are boys the mean mark for the boys in the test was 62% work out the mean mark for the girls

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

Anyone know? is appreciated! will mark brainliest if correct!

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?