When discussing "greater" and "lesser", the term "greater" means
'more positive'. So although 7 is a bigger number than 6 ... that is
7 has the bigger absolute value ... -6 is more positive than -7, so
-6 is the 'greater' of those two numbers.
Let x be the original price of the object.
After the 40% discount, the price of the object now becomes;
x-0.4x=0.6x
0.6x is our new price after the first discount.
Now if we want to find the price after the second discount, (5%)
That would come off to be;
0.6x-0.6(0.05)x=0.6x-0.03x=0.57x
Our last price is 0.57x
If you notice, there was a 43% discount in total, as it goes to 57% of its original price.
This is very non intuitive for some people, as they may think there will be a 45% discount.
Her brother sent C. 490 messages.
In order to find this, we need to set it up as a proportion. Once we have done that, we can cross multiply and solve for the unknown variable.
(4/7) = (280/x) -----> Cross multiply.
4 * x = 7 * 280
4x = 1960
x = 490
57 cubic thingie so the last one
your answer should be D because you have to multiply 3.14 times 21 times 7 to get 461.58
