Question

Please help me to be able to calculate the increase of 20 in the ratio 3:4.and the decrease 20 in the ratio 4:6

Answer 1

Answer: the first one is 23:24 the second is -16:-14

Step-by-step explanation: Just add or subtract the number from each side of the ratio and then put them back together like:this

Answer 2

increase

3:4=3/4

an increase of 20 is required.So,

3/4×20=15

Answer=15

decrease

a decrease of 20 is required.So,

3:4=3/4

3/4÷20

=3/4÷20/1

=3/4×1/20

=3/80

4:6=4/6