2000(3/5)
6000/5
1200
So 1200 doctors used brand X
Children=x
Adults=y
* x + y =275 => x = 275 - y
* 3.00x + 6.40y = 1284 <=> 3.00(275 - y) + 6.40y = 1284 <=> ... <=> y = 135 => x = 275 - 135 = 140
Children: 140
Adults: 135
4. The Jar Has More Coins. This is because to go from 10% to 8% the number of coins besides penny's has to increase
Please Make Me The Brainlyist!