Practicing Success
In a bag, white mobile covers and black mobile covers are in the ratio of 4 : 7. If there are 280 black mobile covers, then how many white mobile covers are there in the bag? |
154 158 160 156 |
160 |
Here, White : Black 4 : 7 ⇒ 7 units = 280 ⇒ 1 unit = 40 ⇒ No. of white balls = 4 x 40 = 160. |