Math, asked by rk0149900, 7 months ago

1 point
27. A motor boat whose speed is
9km/hr in still water goes 15 km
downstream and comes back in a
total time of 3 hours and 45
minutes. Find the speed of the
stream.
O A. 3 km/hr
O B.2 km/hr
O c. 1 km/hr
O D. None of these

Answers

Answered by llxdevilgirlxll

$<!DOCTYPE html><html><head><title>Rain</title></head><body><div class="container"><div class="rain"><div class="drop"></div><div class="waves"><div></div><div></div></div><div class="splash"></div><div class="particles"><div></div><div></div><div></div><div></div></div></div><div class="rain"><div class="drop"></div><div class="waves"><div></div><div></div></div><div class="splash"></div><div class="particles"><div></div><div></div><div></div><div></div></div></div><div class="rain"><div class="drop"></div><div class="waves"><div></div><div></div></div><div class="splash"></div><div class="particles"><div></div><div></div><div></div><div></div></div></div><div class="rain"><div class="drop"></div><div class="waves"><div></div><div></div></div><div class="splash"></div><div class="particles"><div></div><div></div><div></div><div></div></div></div></div><style>html{height: 300px;}body{height: 100%;margin: 0px;display: flex;justify-content: center;align-items: center;background-color: black;}.container{width: 100%;height: 100%;min-width: 600px;max-width: 800px;max-height: 500px;display: grid;grid-template-columns: repeat(3, 1fr);grid-template-rows: repeat(3, 1fr);}.row{display: flex;justify-content: center;align-items: center;}.rain{position: relative;width: 100%;height: 100%;}.rain:nth-of-type(1){--duration: 2.7s;--delay: 1s;transform: translate(10%, 10%) scale(0.9);}.rain:nth-of-type(2){--duration: 2.1s;--delay: 1.2s;transform: translate(-20%, 40%) scale(1.3);}.rain:nth-of-type(3){--duration: 2.3s;--delay: 2s;transform: translate(0%, 50%) scale(1.1);}.rain:nth-of-type(4){--duration: 2s;--delay: 4s;transform: translate(0%, -10%) scale(1.2);}@keyframes fall{0%{transform: translateY(-120vh);}45%{transform: translateY(0%);opacity: 1;}46%{opacity: 0;}100%{opacity: 0;}}.waves > div{position: absolute;top:0px;left: 0px;right: 0px;bottom: 0px;border-radius: 50%;border: solid white 3px;animation-name: spread;animation-duration: var(--duration);animation-delay: var(--delay);animation-iteration-count: infinite;animation-timing-function: ease-out;animation-fill-mode: backwards;}.waves > div:nth-child(2){animation-delay: calc(var(--delay) + 0.3s);animation-timing-function: linear;}@keyframes spread{0%{transform: scale(0);opacity: 1;}40%{transform: scale(0);opacity: 1;}100%{transform: scale(1);opacity: 0;}}.splash{position: absolute;top: 10%;bottom: 50%;left: 35%;right: 35%;border-radius: 8px;clip-path: polygon(7% 100%, 5% 95%, 3% 80%, 11% 50%, 17% 38%, 23% 44%, 30% 53%, 37% 28%, 40% 29%, 45% 43%, 51% 53%, 59% 36%, 64% 22%, 67% 23%, 70% 34%, 72% 46%, 79% 37%, 83% 37%, 93% 61%, 96% 76%, 96% 94%, 94% 100%);background-color: white;transform-origin: bottom;animation-name: splash;animation-duration: var(--duration);animation-delay: var(--delay);animation-iteration-count: infinite;animation-timing-function: ease-out;animation-fill-mode: backwards;}@keyframes splash{0%{transform: scale(0.3, 0);}49%{transform: scale(0.3, 0);}50%{transform: scale(0.3, 0.3);}60%{transform: scale(0.7, 1);}90%{transform: scale(1, 0);}100%{transform: scale(1, 0);}}.particles > div{position: absolute;border-radius: 100%;background-color: white;animation-duration: var(--duration);animation-delay: var(--delay);animation-iteration-count: infinite;animation-timing-function: ease;animation-fill-mode: backwards;}.particles > div:nth-child(1){width: 7px;height: 7px;top: 50%;left: 50%;animation-name: jumpLeft;}.particles > div:nth-child(2){width: 5px;height: 5px;top: 30%;left: 50%;animation-name: jumpLeft;animation-delay: calc(var(--delay) + 0.1s);}.particles > div:nth-child(3){width: 3px;height: 3px;top: 20%;left: 70%;animation-name: jumpRight;animation-delay: calc(var(--delay) + 0.15s);}.particles > div:nth-child(4){width: 5px;height: 5px;top: 30%;left: 50%;animation-name: jumpRight;animation-delay: calc(var(--delay) + 0.3s);}@keyframes jumpLeft{0%{transform: translate(0,0) scale(0);}45%{transform: translate(0,0) scale(0);}60%{transform: translate(-50px, -90px) scale(1);}100%{transform: translate(-60px, 0px) scale(0.1);}}@keyframes jumpRight{0%{transform: translate(0,0) scale(0);}45%{transform: translate(0,0) scale(0);}60%{transform: translate(30px, -80px) scale(1);}100%{transform: translate(50px, 0px) scale(0.1);}}</style></bold></html>$

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1 point27. A motor boat whose speed is9km/hr in still water goes 15 kmdownstream and comes back in atotal time of 3 hours and 45minutes. Find the speed of thestream.O A. 3 km/hrO B.2 km/hrO c. 1 km/hrO D. None of these​

Answers

1 point
27. A motor boat whose speed is
9km/hr in still water goes 15 km
downstream and comes back in a
total time of 3 hours and 45
minutes. Find the speed of the
stream.
O A. 3 km/hr
O B.2 km/hr
O c. 1 km/hr
O D. None of these