7. If a school has 70 computers in the ratio of 3 desktops for every 4 laptops, how many are desktops? Explain your answer.

Step-by-step explanation:

As ratio of desktops to laptops=3:4

Take no. of desktops= 3x

Take no. of Laptops=4x

Total no. of desktops+ Total no. of laptops = Total no. of computers

3x+4x=70

7x=70

x=10

Hence, the total no, of desktops= 3x

Hence, Total no. of desktops= 3×10

=30 desktops

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy