This is the concept of simultaneous equations:
Let the time taken to do one sum be x and time taken to do one product be y.
Total time taken to do 5 sums and seven products will be:
5x+7y=43
Total time taken to do 4 sums and 6 products will be:
4x+6y=36
This gives us the simultaneous equations:
5x+7y=43
4x+6y=36
multiply the top equation by 4 and the bottom equation by 5 then subtract the bottom equation from the top gives us:
-2y=-8
thus:
y=4
next
multiply the top equation by 6 and the bottom equation by 7 then subtract the bottom from the top equation gives us:
-2x=-6
hence;
x=3
therefore:
Total time taken to do 1 sum is x=3 nanoseconds
Total time taken to do 1 product is y=4 nanoseconds
Okay, so a meter is a measure in length. Like a foot, or an inch. To square a measure of length, four equal measures of length (such as a meter) are put together to form a square. This is used for things like construction, or home refurbishing. Ex. 'My kitchen floor is 26 square meters'
value of X is 26 Y, is 23, Z is 8
The answer would be A. If 4x + 6 is the number of boats made in 1 day, then multiplying that by 12 would give us the number of boats made in 12 days so the equation would look like this:
12(4x + 6)
Answer:
<em>This will occur again in 15 more days.</em>
Step-by-step explanation:
Simply divide 15 by 3, which equals 5, in which makes it the least common multiple of 5 and 3.