Check the picture below.
make sure your calcualtor is in Degree mode.
Answer:
120kg
Step-by-step explanation:
The ratio of gravel to cement is 6:1
Then add them up which is 7
The do 140 divided by 7 which is 20
Then do 6 times 20 which is 120
Then do 1 times 20 which is (obviously)20
Then add 20 and 120 which makes 140
Hope it helps!
For the first one, the answer is -1 1/5
for the second one, the answer is 2.75
for the third one and fourth one,
To divide fractions take the reciprocal (invert the fraction) of the divisor and multiply the dividend. This is the quickest technique for dividing fractions. The top and bottom are being multiplied by the same number and, since that number is the reciprocal of the bottom part, the bottom becomes one
