Saved Bookmarks
| 1. |
X varies inversely as y , X-15, the y-10, x-20 theny-? |
|
Answer» follow meStep-by-step explanation:It is GIVEN that the COST of apples (y) and number of apples (x) are in direct VARIATION.∴y∝x⇒y=kx, where k is constant of variationWhen x = 1, y = 8.∴ 8 = k × 1⇒ k = 8So, the EQUATION of variation is y = 8xWhen y = 56, 56 = 8x ⇒ x = 7When x = 12, y = 8 × 12 = 96When y = 160, 160 = 8x ⇒ x = 20 |
|